Question

Choose the correct simplification of (6x − 5)(2x^2 − 3x − 6)

12x3 + 28x2 + 21x + 30

12x3 − 28x2 − 21x + 30

12x3 + 28x2 − 21x + 30

12x3 − 28x2 − 21x − 30

Answer 1

12x3 - 28x2 - 21x + 30

Answer 2

terms in x^2 are -10x^2 - 18x^2 = -28x^2 so the answer is either b or d.

the number at the end is -5 * -6 = + 30

so the answer must be b