Question

factorise the question up side ​

Answer 1

Here sum of coefficients is 0

So one of the factor is x-1

When we divide given polynomial with x-1 we get

x²-22x+120=0

x²-10x-12x+120=0

x(x-10)-12(x-10)=0

(x-10)(x-12)=0

x=10 or 12

∴ x = 1 or 10 or 12

The factors are (x-1), (x-10), (x-12)

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