Question

Simplify the following expression and find its value when x=7and y=-2 .
1. 2(x²+xy ) +7- xy
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Answer 1

Answer:

Solution:

Given, x=7. y=-2

Then, 2(x²+xy)+7-xy

=2{(7)²+7×(-2)}+7-7×(-2)

=2{49+(-14)}+7+14

=2×35+7+14

=70+31

=101(Answer)

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