a²-(2a+3b)² factorise
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Step-by-step explanation:
a²-(2a+3b)²
a²-(4a²+12ab+9b²)
a²-4a²-12ab-9b²
-3a²-12ab-9b²
-3(a²+4ab+3b²)
Answered by
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Answer:
Step-by-step explanation:
A²_(2a+3b)²
=[A+(2a+3b)][A-(2a-3b)].[ a²-b²=(a+b)(a-b)]
=(A+2a+3b)(A-2a+3b).
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