Question

Factorise 36(a + 2b)² - 49(2a - b)² using identity.

Answer 1

Step-by-step explanation:

36(a^2+2×a×2b+2b^2-49(2a^2-2×2a×b×bA^2)

36(a^2+4ab+4b^2)-49(4a^2-4ab+b^2)

36a^2+144b^2-196a^2+49b^2.[cancelling 4ab from both side]

36a^2-196a^2+144b^2+49b^2

160a^2+193b^2

here is the answer

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