Factorise:(a + b)(2a + 3b) − (a + b)(a + 1).
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kkeettaakkii
Step-by-step explanation:
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Step-by-step explanation:
(a + b)(2a + 3b) - (a + b)(a + 1) = (a +b) [ 2a + 3b - (a+1) ]
= (a + b) (2a + 3b - a - 1)
= (a + b)(2a -a +3b - 1) {Combine like terms}
= (a + b)(a + 3b - 1)
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