Factorise x²-9x= 112 – InterviewSolution

1.	Factorise x²-9x= 112
Answer» X^2-9x=112=> x^2-9x-112=0=> x^2-16 x+7x-112=0=> x(x-16)+7(x-16)=0=> (x-16)(x+7)=0x-16=0=> x=16x+7=0=> x= -7

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