Question

expand the form (4a-7b)^2

Answer 1

$(4a - 7b) {}^{2} \\ = 16a {}^{2} + 56ab - 49b {}^{2}$
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Answer 2

hello ✌✌

$(4a - 7b) {}^{2}$

$16 {a }^{2} - 56ab + 49 {b}^{2}$

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