Question

(x+y).(x-y)-x.(x+1)

Answer 1

\(\left(x+y\right)\left(x-y\right)-x\left(x+1\right)=x^2-y^2-x^2-x=-y^2-x\)

Answer 2

\(=x^2-y^2-x^2-x=-y^2-x\)

Answer 3

(x+y)(x−y)−x.(x+1)=\(x^2-y^2-x^2-x=-y^2-x\)

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Answer 4

(x+y).(x-y)-x.(x+1)

=> x²-xy+xy-y²-(x²+x)

=>x²-xy+xy-y²-x²-x

=>-y²-x