Question

(x-1) (x+1) =(x-3) (x+1) check weather it is a quadratic equation or not​

Answer 1

Answer:

it is not quadratic equation

Answer 2

$\bf{\underline{\underline{Question}}}$

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(x-1) (x+1) =(x-3) (x+1) check weather it is a quadratic equation or not.

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$\bf{\underline{\underline{Solution}}}$

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$\tt{(x-1)(x+1)\:=\:(x-3)(x+1)}$

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$\tt{\cancel {x^{2}}\cancel{+x}\cancel{-x}-1^{2}}\:=\: {\cancel{x^{2}}+x-3x-3}$

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$\tt{-1\:=\: -2x-3}$

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$\tt{-1+3+2x\:=\: 0}$

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$\tt{2+2x\:=\: 0}$

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$\tt{2(1+x)\:=\: 0}$

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No, it is not a Quadratic equation.

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$\bf{\underline{\underline{Thanks}}}$