1
Question
Factorise:
x2−11x−42
Factorise:
x2−11x−42
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Solution
x2−11x−42=x2−14x+3x−42 {∵ −11=−14+3−42=−14×3}=x(x−14)+3(x−14)=(x−14)(x+3) Ans.
x2−11x−42=x2−14x+3x−42 {∵ −11=−14+3−42=−14×3}=x(x−14)+3(x−14)=(x−14)(x+3) Ans.
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