What is nine less then the product of a number squared and ten

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

One integer is 5 more than another. their product is 104. find the integers

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)