ONLY NEED TO DO 6, 8, 10, 12, 14.

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

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n