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x(x+12)=28
I got (x+6)=28. Is this correct? Please and Thank you.
 one year ago
 one year ago
x(x+12)=28 I got (x+6)=28. Is this correct? Please and Thank you.
 one year ago
 one year ago

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DirectrixBest ResponseYou've already chosen the best response.1
@kitsune0724 Are you supposed to solve the given equation for x?
 one year ago

matrickedBest ResponseYou've already chosen the best response.0
nope first multiply and then simplify and then
 one year ago

kitsune0724Best ResponseYou've already chosen the best response.0
@Directrix No you are suppose to find what would give the middle of the problem.
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
@kitsune0724 I don't know what you mean by "middle of the problem." x(x+12)=28 x^2 + 12x = 28 x^2 + 12x + 28 = 0 After that, I don't know what to say because I don't know the "middle."
 one year ago

kitsune0724Best ResponseYou've already chosen the best response.0
@Directrix would it be like this (x12)^2=28?
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
@kitsune0724 I don't know because I don't understand what we are supposed to be doing. We need the directions / instructions for the problem.
 one year ago

kitsune0724Best ResponseYou've already chosen the best response.0
@Directrix Which of the following equations is equivalent to the equation in exercise 30? (In other words, which of these is an equation you should get in the MIDDLE of the completing the square process?) this is the problem.
 one year ago

AzteckBest ResponseYou've already chosen the best response.0
Oh...You complete the square...
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
x(x+12)=28 x^2 + 12x = 28 x^2 + 12x + 36 = 28 + 36 (x + 6)* (x+6) = 8 > Do you think we've made it to the middle yet. @kitsune0724
 one year ago

kitsune0724Best ResponseYou've already chosen the best response.0
@Directrix yes. that's what I got so far.
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
(x + 6)* (x+6) = 8 (x + 6) = sqrt(8) OR (x + 6) =  sqrt (8) @kitsune0724
 one year ago

kitsune0724Best ResponseYou've already chosen the best response.0
@Directrix (x + 6) =  sqrt (8).
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
@kitsune0724 What about this> (x + 6) = sqrt(8) It is one of the two roots.
 one year ago

kitsune0724Best ResponseYou've already chosen the best response.0
@Directrix would it be x=6+2sqrt2, 62sqrt2?
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
Not quite. I think you have a sign error. (x + 6) = sqrt(8) OR (x + 6) =  sqrt (8) @kitsune0724 x = 6 + sqrt(8) OR x = 6  sqrt (8) x = 6 + 2sqrt2 or x = 6 2sqrt2
 one year ago

kitsune0724Best ResponseYou've already chosen the best response.0
@Directrix x=6+2sqrt2, 62sqrt2? I'm getting a bit confused here. Can you please draw it out for so I can what I'm doing wrong? Thank you.
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
We're just subtracting 6 from both sides to solve for x. For example, (x + 6) =  sqrt (8). Subtract 6 from both sides. x+6  6 = sqrt(8)  6 x + 0 = 6  sqrt(8) x = 6  2sqrt2 Same thinking for the second root. @kitsune0724
 one year ago
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