Question

Use suitable identity to solve (2a+7)(2a−7)

Answer 1

Answer:

The identity is A^2-B^2

(2a^2-7^2)

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Answer 2

Answer:

By using identity

${\bold{\purple{(a+b)(a - b) = {a}^{2} - {b}^{2} }}}$

$\tt (2a+7)(2a−7)\\ \tt \: {2a}^{2} - {7}^{2} \\ \tt \: {4a}^{2} - 49$

$\bold \red{Celestial} \bold{Centrix}$