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Question

What must be subtracted from x3−3x2+5x−1 to get 2x3+x2−4x+2 ?


A

x3+4x2+9x3

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B

x34x2+6x3

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C

x34x2+9x9

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D

x34x2+9x3

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Solution

The correct option is D

x34x2+9x3


Let us assume that we have to subtract 'y' from x33x2+5x1 to get 2x3+x24x+2

(x33x2+5x1)y=2x3+x24x+2
y=(x33x2+5x1)(2x3+x24x+2)
x33x2+5x1
2x3+ x24x+2
+
__________________
x3 4x2+9x3


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