Question

How do you foil `(x-9)(x-2)`?

Answer 1

`x^2 - 11x + 18`

Explanation:

Multiply first term in first bracket by both terms in second brackets:
`x*x - 2*x`
Multiply second term in first bracket by both terms in second brackets:
`-9*x +9*2`
Add results together:
`x*x - 2x -9x +9*2`
Simplify:
`x^2 - 11x + 18`