What is the value of m2-2mn+n2 for m=-2 and n=4

What is the value of x for 3x + (8x+15) = 180

5x+15 - 2 = 2 - x+9 Given Or Equivalent Equations

How can you solve the Quetion that has variables on both sides how do you move a variable terms from one side of the equation to the other

In what ways do you think presidents today are more powerful than they were in the past?

Square root of 52 to the nearest 100th

Karen and bill collect coins. Karen has x coins. Bill has 3 coins fewer than five times the number of coins Karen has.

Find the derivative of tan^-1 3x ... ?

Solve the equation a/6 = - 9

Lines m and n are parallel. Parallel lines m and n are cut by transversals s and t. Clockwise from top left, the angles formed by m and t are blank, blank, (5 x minus 1) degrees, blank; formed by m and s are blank, (9 x + 2) degrees, blank, 1;

The sides of an open lot are measured in feet. Which unit could you use to describe the area of the lot? A feet B cubic feet C square feet D yards