If DE = X+1, EF = x-2, DF =15, and E is
between D and F. then DE = ?

Find and simplify the difference of the golden ratio and its multiplicative inverse

The spotter on the ground is standing beneath the safety net. what is his distance from the base of the platform, to the nearest meter? 3 meters, 2 meters, 4 meters, 1 meter?

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81