Question

Verify if (2x + 6)^2 − 48x = (2x − 6)^2 by using suitable identities.

Mention the identities used.

Answer 1

Using the identity (a + b)^2 = a^2 + b^2 + 2ab We get, (52)^2 = (50 + 2)^2 = (50)^2 + (2)^2 + 2(50)(2) = 2500 + 4 + 200 = 2704

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