Question

(9a+8b)(9a+8b) find product

Answer 1

Answer:

9a(9a + 8b ) +8b(9a +8b)

81a² +72 ab + 72ab +64b²

81a² + 144 ab +64b²

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Answer 2

Hi.

$( {9a + 8b)}^{2} \\ using \: identity \: {a + b}^{2} \\ = {a}^{2} + {b}^{2} + 2ab \\ ( {9a)}^{2} + ( {8b)}^{2} + 2 \times 9a \times 8b \\ {81a}^{2} + {64 b}^{2} + 144ab$

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