Question

Factorise quadratic x^2+7x+12

Answer 1

x²+7x+12

LCM of 12 is4 and 3

x²+4x+3x+12

x(x+4)+3(x+4)

(x+3) (x+4)

Answer 2

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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