Question

1)9a²b²–16 resolve into factors​

Answer 1

Step-by-step explanation:

$9 {a}^{2} {b}^{2} - 16$

$= {(3ab)}^{2} - {(4)}^{2}$

$= (3ab + 4)(3ab - 4)$

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Answer 2

9a²b² - 16

(3ab)² - (4)² [a²-b² = (a+b) (a-b)]

(3ab + 4) (3ab - 4)