Question

7, 4(a + b) - 6(a + b)(a+b)​

Answer 1

$4(a + b) - 6(a + b)(a + b)$

$4a + 4b - 6a^{2} + 6b^{2}$

$4a - 6a^{2} + 4b + 6b^{2}$

$2a(2 - 3a) + 2b(2 + 3b)$

$(2a + 2b)(2 - 3a)(2 + 3b)$

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