Question

Solve the equation below by factoring:

Answer 1

Ask: Which two numbers add up to 7
7 and multiply to 12?
3 and 4

Rewrite the expression using the above.
(x+3)(x+4) = 0
x+3=0 or x+4=0
So x = -3 or x= -4

Answer 2

$\huge\fcolorbox{blue}{aqua}{Answer:}$

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Answer: =A.$x = - 3$ $x = - 4$

Solution:

$x ^ { 2 } +7x=-12$

$x^{2}+7x+12=0$

$a+b=7 ab=12$

$1,12 2,6 3,4$

$1+12=13 2+6=8 3+4=7$

$a=3 b=4$

$\left(x+3\right)\left(x+4\right)$

$x = -3$ , $x = -4$

so the answer is = A.

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Explanation:

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