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Q.

Subtract 10x2y2z2 − 10xy + 5x from 10x2y2z2 + 12xy + 14x.

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a

2xy + 24x

b

10x2y2z2 + 22xy + 9x

c

−10x2y2z2 + 22xy + 9x

d

22xy + 9x

answer is D.

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Detailed Solution

(10x2y2z2 + 12xy + 14x) (10x2y2z2 − 10xy + 5x)

= 10x2y2z2 + 12xy + 14x 10x2y2z2 + 10xy − 5x

Collecting the like terms together, we get

= 10x2y2z2 10x2y2z2 + 12xy + 10xy + 14x − 5x

= 22xy + 9x

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