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Check whether the following are quadratic equation. (x + 1)^2 = 2(x - 3)

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Check whether the following are quadratic equation.

(x + 1)2 = 2(x - 3)

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Given: (x + l)2 = 2(x – 3) 

⇒ x2 + 2x + 1 = 2(x – 3) = 2x – 6

⇒ x2 + 2x + l – 2x + 6 = 0 

⇒ x2 + 7 = 0 is a Q.E.

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