Question

help?

solve by factoring


x^2 = 4 + 12

Answer 1

first simplify the right side of equation

Answer 2

what u will get?

Answer 3

the equation will look like this:

x^2=16

now, since you need to solve by factoring, subtract 16 from both sides.

x^2 - 16=16 - 16

x^2 - 16 = 0
@cutiekawdfi

Answer 4

i messed up the equation.. its actually x^2= 4x + 12

Answer 5

ok.
then do the following
subtarct 4x and 12 from both sides

you will get x^2 - 4x - 12 = 0

now you need to get such equation: (x-a)*(x-b)=0, where x=a and x=b will be your solutions.

Answer 6

so you need to find such a and b, so that a+b=-4 and a*b = -12

Answer 7

oops sorry a+b=4 and a*b=-12

Answer 8

so it will be a=6 and b=-2

6+(-2)=4.......... this one works
6*(-2)=-12............this one also works

so (x-6)(x-(-2))=0 or (x-6)(x+2)=0

so the solutions are 6 and -2