Question

Solve the following quadratic equation: x2 - 36 = 5x.



A. x = -3/2 or 23/2
B. x = -4 or 9
C. x = -9 or 4
D. x = ±6
Solve for x: x2 + x – 12 = 0.



A. x = 3 or –4
B. x = -3 or -4
C. x = 3 or 4
D. x = 5

Answer 1

B and A

Answer 2

1. \(\large x^2-5x-36\) which two numbers add to give -5 and multiply to give -36?
2. \(\large x^2-x-12=0\) which two numbers add o give -1 and multiply to give 12?