Question

Which model represents the factors of x 2+9x+8

Answer 1

x^2+9x+8

(x + blank ) (x + blank)

I factor using the "guess and check" method. There are many ways to factor so its important to find one that works the best for you.

When I first think of factors of 8 I think of 4 and 2

(x+4)(x+2)

we can see that this multiplies to be 8 but it only adds to be 6 so it doesnt work

Next ill use 8 and 1

(x+8)(x+1)

8*1=8

8+1=9

so we see that this works

we arent done yet though

(x+8) and (x+1)

we have to get x by itself

x=-8 and x=-1

Hope this helps!