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  • - x to the power 2 -y to the power 2 +7*xyif x=1/5 and y=-1/5

- x to the power 2 -y to the power 2 +7*xyif x=1/5 and y=-1/5

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The given expression 

                                  $$ x^2 - y^2 + 7 xy $$

Put the value x = 1/5, and y = -1/5

then 

                                      $$ (1/5)^2 - (-1/5)^2 + 7 imes (1/5) imes (-1/5) $$\$$ $$ frac-725$$\ 

Hence, the value 

                        $$ frac-725$$\ 

Posted by

Deependra Verma

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