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anonymous
 one year ago
Use the quadratic formula to solve the equation.
2x^2+3x+5=0
anonymous
 one year ago
Use the quadratic formula to solve the equation. 2x^2+3x+5=0

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hartnn
 one year ago
Best ResponseYou've already chosen the best response.0Compare your quadratic equation with \(ax^2+bx+c=0\) find \[a=...?\\b=...?\\c=...?\\\] \[ \\ \sqrt{b^24ac}=...?\] then the two roots of x are: \(\huge{x_{1,2}=\frac{b \pm \sqrt{b^24ac}}{2a}}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0somethings not coming up correctly :(. I tried plugging everything in.

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0can you plz show your work?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\sqrt{3x^24(2x^2*5)}\]

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0okk...we can't have x in the values of a,b,c dw:1442238245129:dw

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0a = 2, b =3 c = 5 got it? can you now try again ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i tried again still don't have anything :/ i'm trying to put it in the TI30XS calculator.

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0start by finding b^2 4ac (3)^2  4(2)(5) = ... ?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0and its square root is ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.07 because 7*7 is 49 :D

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0yes! now we have the \(\sqrt{b^2 4ac}\) part which equals 7

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0\(numerator = b \pm \sqrt{b^24ac} = 3 \pm 7\) so what the the 2 values of numerator? 3 +7 = ...? 37 = ... ?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0yes, now the denominator 2a = 2(2) = 4 so your 2 values of x are 4/4 and 10/4 simplify them!

ryanwhite499
 one year ago
Best ResponseYou've already chosen the best response.0Let's solve your equation stepbystep. −2x2+3x+5=0 Step 1: Factor left side of equation. (−2x+5)(x+1)=0 Step 2: Set factors equal to 0. −2x+5=0 or x+1=0 x= 5 2 or x=−1 Answer: x= 5 2 or x=−1

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0very good! they're correct :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes! thank you so much for all your help :).

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0the 2nd numerator is 10 so the 2nd value is 10/4 = 5/2

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0but you understand the steps, right? :)
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