I need help with this

Find the roots of the equation below. x^2 - 6 + 9 = 0

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7