If (a+b)^2=25, and a^2+b^2=17, then what is a*b equal to? .

Name the quadrilaterals that have four equal sides.

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10