Question

(a+b)²-11(a+b)-42. Factorize it.​

Answer 1

Step-by-step explanation:

${(a + b)}^{2} - 3(a + b) + 14(a + b) - 42 \\ (a + b)(a + b - 3) + 14(a + b - 3) \\ (a + b - 3)( a + b + 14)$

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