Question

Write the quadratic equation in factored form. Be sure to write the entire equation.

x^2 + x - 12 = 0

Answer 1

y = x^2 + x - 12 = 0
y = (x - 3)(x + 4)

Answer 2

Can also get if you
assume (x+a)(x+b)
then

-12 = a b
+1 = a + b

Simple choices for -12 = -(12)(1) = -(6)(2) = -(4)(3)
and a=-3 b=4 does the trick.

Answer 3

alternatively, use the quadratic equation solution formula

Answer 4

which gives you x = 3, b=-4 so (x-3)(x+4) is factoring