factorise 4a² - 4 ab + b²
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4a^2-4ab+b^2
=4a^2-2ab-2ab+b^2
=(4a^2-2ab)+(-2ab+b^2)
=2a(a-b)-2b(a-b)
=(2a-2b)(a-b)
Hope it will help u..
=4a^2-2ab-2ab+b^2
=(4a^2-2ab)+(-2ab+b^2)
=2a(a-b)-2b(a-b)
=(2a-2b)(a-b)
Hope it will help u..
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