HOW DO I Factor the following polynomial: x2 – 9x + 18

Question

this is what i done so far  x^2-9x+18= x(x-9+18)  but by 18 not having the same variable as the rest it confuses me.

Answer 1

need to factor into two binomials.

ask yourself what multiplies to x^2, this is x times x so set up two sets of parentheses (x     )(x     )

then ask yourself what multiples to +18 and adds to -9?  this is (-3) times (-6)

put these into your parentheses (x-3)(x-6) it is now factored.