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Question

Simplify: (2x+1)(1x)(x2+x)

A
2x4x3+2x2+x
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B
2x4x3+2x2+x
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C
2x4+x3+2x2+x
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D
2x4x3+2x2x
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Solution

The correct option is B 2x4x3+2x2+x
(2x+1)(1x)(x2+x)
Multiply the coefficients and add the exponents of the variable.
= (2x+1)(x2+xx3x2)
= 2x3+2x22x42x3+x2+xx3x2
= 2x4x3+2x2+x

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