Simplify. 6 √20 - 3 √8

(Please explain the steps so I can better understanding thank you:))

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The graph of y x3 is translated so that the point (1. 1) is moved to (1, 4). what is the equation of the new graph?