1
Question
Factorise:
x2−4x−12
Factorise:
x2−4x−12
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Solution
x2−4x−12=x2−6x+2x−12 {∵ −12=−6×2−4=−6+2}=x(x−6)+2(x−6)=(x−6)(x+2)
x2−4x−12=x2−6x+2x−12 {∵ −12=−6×2−4=−6+2}=x(x−6)+2(x−6)=(x−6)(x+2)
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