Factorise quadratic x^2+7x+12
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x²+7x+12
LCM of 12 is4 and 3
x²+4x+3x+12
x(x+4)+3(x+4)
(x+3) (x+4)
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x²+7x+12
= x²+4x+3x+12
= x(x + 4) +3(x + 4)
= (x + 4)(x + 3)
Hence, The factories form of the above quadratic equation is “(x + 4)(x +3)” .
Hope it's helpful to you.
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