Complete the Square m^2-20

Find the missing term that completes the square.

m^2-20+__

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

Which of the following expressions is equal to 2x^2+8

Here is my question! jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?