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Multiply (5x2 + x − 4)(x + 2). 5x3 + x2 − 4x − 8 5x3 + 11x2 − 2x − 8 5x3 + 10x2 − 4x − 8 5x3 + 20x2 + 2x − 8
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5 votes
Multiply (5x2 + x − 4)(x + 2).

5x3 + x2 − 4x − 8
5x3 + 11x2 − 2x − 8
5x3 + 10x2 − 4x − 8
5x3 + 20x2 + 2x − 8

User TheZeke
by
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2 Answers

5 votes

Answer:

5x^3 + 11x^2 -2x -8 (c)

Explanation:

User Radioactive
by
8.2k points
3 votes
(x + 2)(5x^2 + x - 4) =
x(5x^2 + x - 4) + 2(5x^2 + x - 4) =
5x^3 + x^2 - 4x + 10x^2 + 2x - 8 =
5x^3 + 11x^2 - 2x - 8 <===

User Terrace
by
8.6k points
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