Find the missing length . leave your answers in simplest radical form

Darian wants to build a regulation size pool table that is 9 feet in length.he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1

The product of (7x-2) and (20-3x)/4. when x=4