What is the formula to find the discriminant. you will earn 15 points.

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

V=x^4-y^4 pick three expressions that can represent the three dimensions of the prism (each in meters)

Find the amount of simple interest earned for depositing the given principle in an account if $2200 is invested at 5.5 % for 6 months