Question

x(2x - 7) - y2 can be express as ?​

Answer 1

Not a solution

Given equation: −2x+y−7=0

⟹−2x+y=7⇒y=2x+7

Now, check for x=−3 and y=−2 for the solution of given equation:

We have, RHS =2x+7

=2(−3)+7=−6+7=1

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=−2= LHS

Hence, x=−3 and y=−2 isn't the solution of given equation.