Question

factorise X ^ 2 - 9 X + 20​

Answer 1

Answer:

x^2 -9x +20

=x^2 - (5x+4x) +20

= x^2 -5x-4x +20

=x(x-5) -4(x-5)

= (x-4)(x-5)

Answer 2

Answer:

(x - 4) (x -5)

Step-by-step explanation:

x^2 - 9x + 20

x^2 - 4x - 5x + 20

x(x - 4) -5( x - 4)

(x -4) (x - 5)

Hope this helps you.....