Factorise (i) 9a2 + 42ab + 49b2 – InterviewSolution

1.	Factorise (i) 9a2 + 42ab + 49b2
Answer» answer is (3a+7b)^2Step-by-step explanation: 9a2 + 42AB + 49b2(a^2+2ab+b^2)(3a)^2+2×3a×7b+(7b)^2(3a+7b)^2I hope it helps you ☺️

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