Simplify (3x2 − 3 + 9x3) − (4x3 − 2x2 + 16).

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: ?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

Are the corresponding angles congruent? explain why or why not.