The length of the rectangle is: 5n8 and the width is : 2n3. What is the area of the
rectangle?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 7x + 33, and the other angle measures 70. 5.3 8.14 11 14.7

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).