Question

Select the correct answer. Simplify the expression (2x − 9)(x + 6).

A
2x^2 + 21x − 54
B.
2x^2 − 3x − 54
C.
2x^2 + 3x − 54
D.
2x^2 − 54

Answer 1

C

Explanation:

(2x - 9)(x + 6)

= 2x(x + 6) - 9(x + 6)

= 2x² + 12x - 9x - 54

= 2x² + (12 - 9)x - 54

= 2x² + 3x - 54

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Answer 2

C. 2x² + 3x − 54

Explanation:

(2x − 9)(x + 6)

= 2x² + 12x - 9x - 54

= 2x² + 3x - 54

So, the answer is C. 2x^2 + 3x − 54