Help please ill give you brainlist

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: ?

Which expression shows the sum of the polynomials with like terms grouped together

Find the value of x. round the length to the nearest tenth