Which of the following us the solution to 6 | x-9 | > 12?

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: ?

For each proportion find the unknown number x 1/5/8=×/15

Sketch one cycle if the cosine function y=2cos2theta