हल करना (x)^(2)-7(x)^(2)+2xy-(y)^(2)+9 | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$${ x }^{ 2 } -7 { x }^{ 2 } +2xy- { y }^{ 2 } +9$$