Question

(5a+2b)^3 + (2a+5b)^3
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Answer 1

Step-by-step explanation:

(5a+2b+2a+5b){(5a+2b)²-(5a+2b)(2a+5b)+(2a+5b)²}

(7a+7b){(25a²+20ab+4b²)-(10a²+29ab+10b²)+(4a²+20ab+25b²)}

7(a+b)(25a²+20ab+4b²-10a²-29ab-10b²+4a²+20ab+25b²)

7(a+b)(19a²+11ab+19b²)

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