Question

9-asquare+2ab-bsquare​

Answer 1

$\sf 9 - {a}^{2} + 2ab - {b}^{2}$

$\sf = {3}^{2} - ( {a}^{2} - 2ab + {b}^{2} )$

$\sf = {3}^{2} - {(a - b)}^{2}$

$\sf = (3 + a - b)(3 - a + b)$

Answer 2

Answer:

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