Question

Which expression is equivalent to

Answer 1

D

Explanation:

x^2 - 7x + 12 + (x - 3)^2 Add (x - 3)^2 after it has been expanded.

x^2 - 7x + 12 + x^2 - 6x + 9 Combine like terms

2x^2 -7x - 6x + 21

2x^2 - 13x + 21 Factor

(2x - 7)(x - 3)

Which is exactly what D says.