x^2 + 7 x + 12 factorise
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Answer:
(x+3) (x+4)
Step-by-step explanation:
= x^2 + (3+4)x + 12
= x^2 + 3x + 4x +12
= x (x+3) +4 (x+3)
= (x+3) (x+4)
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