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Question

Factorise:
x217x+60

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Solution

In the given polynomial x217x+60,
The first term is x2 and its coefficient is 1.
The middle term is 17x and its coefficient is 17.
The last term is a constant term 60.

Multiply the coefficient of the first term by the constant 1×60=60.

We now find the factor of 60 whose sum equals the coefficient of the middle term, which is 17 and then factorize the polynomial x217x+60 as shown below:
x217x+60=x212x5x+60=x(x12)5(x12)=(x5)(x12)

Hence, x217x+60=(x5)(x12).

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