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Question

If x=14, y=10, z=5 and t=1 find the value of (xy)(5xy)+(xy)(z+t)

A
44
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B
72
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C
76
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D
80
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Solution

The correct option is A 44
For, x=14, y=10, z=5 and t=1,

(xy)5(xy)+(xy)(z+t)

=(1410)5(1410)+(1410)(51)

=4×5×2+4
=44
So, option A is correct.

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