Question

factorise -18 +11x-x square​

Answer 1

Answer:

x square +11x -18

we have to find 2 mubers whose product is 18 and sum is 11.

the munbers are 2 and 9

-x square + 2x+9x -(2×9)

x(-x+2) - 9(-x+2)

x-9×(-x+2