Find m∠CDE I already found x

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2

Which expression and diagram represent “renee biked four times as far this month as last month”?

Arius flipped a coin 500 times and it landed heads up 300 times. what is the relative frequency of the coin landing heads up based on the results of this experiment?