Please help it's important

For which rational expression is -2 an excluded value of x?

1. a right triangle is graphed on a coordinate plane. find the length of the hypotenuse. round your answer to the nearest tenth. 2. use the angle relationship in the figure below to solve for the value of x. assume that lines a and b are parallel and line c is a transversal.

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b