Question

Factorise: (a+2b) (3a+b) - (a+b) (a+2b) + (a+2b)^2​

Answer 1

Step-by-step explanation:

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

=(a+2b){(3a+b)-(a+2b)+(a+2b)}

=(a+2b){(3a+b)-(a+2b)^2}

=(a+2b){(3a+b)-(a^2 + 4ab+4b^2)}

=(a+2b)({3a+b-a^2 - 4ab-4b^2)(ans)

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