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anonymous
 one year ago
WILL AWARD MEDAL AND WILL FAN HELP PLS
What are the zeroes of f(x) = x2 − x − 2?
x = −2, 1
x = 2, −1
x = −2, −1
x = 2, 1
anonymous
 one year ago
WILL AWARD MEDAL AND WILL FAN HELP PLS What are the zeroes of f(x) = x2 − x − 2? x = −2, 1 x = 2, −1 x = −2, −1 x = 2, 1

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How did you get that?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so I do these kinds of problems differently so tell me when you get lost okay?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438386272376:dw These do not mean fractions okay? They just mean to multiply. If you see the 1/2 that means 1*2 = 2 (the same 2 from the equation)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay probably I should use the quadratic formula then

jdoe0001
 one year ago
Best ResponseYou've already chosen the best response.0hint: \(\large \begin{array}{ccllll} f(x)=x^2&x&2\\ &\uparrow &\uparrow \\ &2+1&2\cdot 1 \end{array}\)

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2okay so for that method factor out first and last term then cross multiply you should get the middle term

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ya that's what I use @jdoe0001 but it's soo hard to explain that.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think I understand now

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2dw:1438386492743:dw it should 1 times 2 and don't forget the x

jdoe0001
 one year ago
Best ResponseYou've already chosen the best response.0@sofialauren I was going to ask for the autograph, but I notice is not sofia loren, so that's ok, but I'd settle for 2 binomials

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the quadratic formula: \[\frac{ b \pm \sqrt{b^24ac} }{ 2a }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ugh... Another person to mix up our names

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Did you understand how to do it?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2now cross multiply dw:1438386562007:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You almost got it! There's no x after 2.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh I see you were solving the blue circle in the picture above right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Lol @Nnesha I thought sofia drew that pic. Turns out it was you.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You still there sofia?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you help me out with another question?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2ohh okay i just explained the method you were doing nice!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ya sure! And lol ya :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Factor x2 − 8x + 9. (x − 9)(x − 1) (x + 9)(x + 1) Prime (x + 9)(x − 1)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Is it prime because it has an addition symbol?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is what I got but I don't see that answer....

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And what do you mean by prime?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't know the exact definition

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well prime is an exact number. Like 3/2 equals 1.5 that answer would be prime. but i don't know how equations can be prime.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(x+3)^2 might be prime I guess.....I'm not really sure.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I tried distributing the answer choices to see if it would bring me back to the original equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Did any of them work?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Then I would choose prime especially if you know that the other choices don't work.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Nnesha do you know what they mean by prime in this problem?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2well if leading coefficient is one then apply easy method *headphone* method :D find two number when you multiply them you should get product of AC and if you add or subtract them you should get middle term \[\huge\rm Ax^2+Bx+C=0\] where a =leading coefficient b=middle term c= constant term

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2so in that question a=1 b=8 c= 9 ac = 9 what two number you should multiply to get 9 BUT when you add them or subtract them you should get middle term which is 8

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Lol not trying to be obvious! :P Just wondering

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2prime means : when there is only *one* factor in other words a number which only divided by one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry I'm trying to multitask. I have to hurry so I'm trying to get everything done

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2there aren't any number you can multiply to get 9 and add or subtract to get middle term 9 times 1= 9 91= 8( but middle term is negative ) so 9 and 1 are not factors

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2so that's the reason x^28x+9 is not factorable

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You can factor 9 and 1 though

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2okay multiply 9 times 1= 9 ( but we need POSITIVE 9 ) \[\huge\rm x^28x\color{ReD}{+9}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ohhhh!!! Lol sorry I didn't see that. Ya nnesha is right on that :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry guys I have to go and I just put the answer as prime. Thank you for your help!
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