Question

B is the midpoint of, AB = x² + 2x + 25 and BC = 40. What are the values of x?

Answer 1

x=3, -5.

Explanation:

x^2+2x+25=40

x^2+2x+25-40=0

x^2+2x-15=0

factor out the trinomial,

(x-3)(x+5)=0

zero property,

x-3=0, x+5=0,

x=0+3=3,

x=0-5=-5.