Question

expand the following by using suitable formula (3x+5) (3x+7)​

Answer 1

$(3x + 5)(3x + 7)$

$using \: identity \\ (x + a)(x + b) = {x}^{2} + \\ (a + b)x + ab$

${(3x)}^{2} + (5 + 7)3x + (5)(7)$

$9 {x}^{2} + 36x + 35$

Answer 2

Answer:

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