Question

X^2-4x-221 factorise

Answer 1

Answer:

ok

Step-by-step explanation:

I hope it will be help you

Answer 2

Step-by-step explanation:

x^2-4x-221=0

x^2+13x-17x-221=0

x(x+13)-17(x+13)=0

(x+13) (x-17)=0

x+13=0 or x-17=0

x=0-13. x=0+17

x=-13. x=17