Evaluate
\left(7-y-x\right)^{2}
Expand
x^{2}+2xy-14x+y^{2}-14y+49
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x^{2}+2xy-14x+y^{2}-14y+49
Square 7-x-y.
x^{2}+2xy-14x+y^{2}-14y+49
Square 7-x-y.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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Integration
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Limits
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