a^2 + 4ab+ 3b^2
Factorise it plz
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a^2+4ab+3b^2
=a^2+3ab+ab+ 3b^2(by splitting the middle term)
a(a+3b)+b(a+3b)
(a+b)(a+3b)
=a^2+3ab+ab+ 3b^2(by splitting the middle term)
a(a+3b)+b(a+3b)
(a+b)(a+3b)
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