Question

if i have 7c²(c+9)+2(c+9) then i got 7c³+63²+2c+18 what next?

Answer 1

What are you trying to do? expand or factorize?

Answer 2

If you want to factorise it's \[(7c^2+2)(c+9) \] as both 7c^2 and 2 are multiplied by (c+9)

Answer 3

thank you . is that my next step?

Answer 4

No probs, but steps to do what?
If you are trying to find the solution to 7c²(c+9)+2(c+9)=0, then from the factorised form above you can see that it has one solution at c=-9.