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B
−2x4−x3+2x2+x
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C
−2x4+x3+2x2+x
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D
−2x4−x3+2x2−x
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Solution
The correct option is B−2x4−x3+2x2+x (2x+1)(1−x)(x2+x) Multiply the coefficients and add the exponents of the variable. =(2x+1)(x2+x−x3−x2) =2x3+2x2−2x4−2x3+x2+x−x3−x2 =−2x4−x3+2x2+x