Question

Factorise x ^2 + 17 x − 60

Answer 1

Step-by-step explanation:

x^2+17x-60=0

x^2+(20-3)x-60=0

x^2+20x-3x-60=0

x (x+20)-3(x+20)=0

(x-3)(x+20)=0

x=3 and x=-20

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