Question

Select the correct answer from each drop-down menu.

Three students used factoring to solve a quadratic equation.
x²+17x+72=12.

Jordan's Solution x² + 17x + 72 = 12, (x + 8)(x + 9)= 12, x+8=12 & x+9=12

Keith's Solution x² + 17x + 72 =12, x² + 17x +60 =0, (x +5)(x +12) =0 x + 5 = 0 & x + 12 =0.

Randall's Solution x² +17x +72 = 12,x2 +17x = -60,x(x +17) = -60, -60 & x +17 = -60.

he equation was solved correctly by ____. The solutions of the equation are____.

Answer 1

1. Keith's Solution
2. -5
3. -12

Explanation:

x + 5 =0 & x + 12 =0

:- x = -5 & -12