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Multiply (5x2 + x − 4)(x + 2).
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Multiply (5x2 + x − 4)(x + 2).

User Nkchandra
by
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2 Answers

3 votes
(5x^2 + x - 4)(x + 2) =
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 Peter Karasev
by
8.0k points
5 votes

Answer: The answer is
5x^3+11x^2-2x-8.

Explanation:

Here, the given expression is,


(5x^2+x-4)(x+2)

By multiplying,


=(5x^2+x-4)x + (5x^2+x-4)2


=5x^3+x^2-4x+10x^2+2x-8


=5x^3+11x^2-2x-8

Thus, We can write,


(5x^2+x-4)(x+2)=5x^3+11x^2-2x-8

User Artem Pianykh
by
8.0k points
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