how to factorise a square- A B minus- 3a+ 3b
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(a - b)^3 = a^3 - b^3 - 3ab(a - b)
a^3 - b^3 = (a - b)^3 + 3ab(a - b) = (a - b)(a^2 + b^2 + ab
a^3 - b^3 = (a - b)^3 + 3ab(a - b) = (a - b)(a^2 + b^2 + ab
kailash72:
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