A) the quadratic x^2-4x-21 can be written in the form (x+a)^2+b find the values of and and b b) hence, or otherwise, solve the equation x^2-4x-21=0

The deck that kenneth is building is in the shape of a parallelogram abcd the measure of angle c is one third the measure of angle b find the measure of each angle of the deck

Which of the following can be used to explain a statement in a geometric proof?

How many terms does the polynomial x^2 y^2 have