Question

Solve the above quadratic equation

Answer 1

r=3, r=1, r= -1

Explanation:

48r^3-144r^2-48r=-144

48r^3-144r^2-48r +144 =-144 + 144

48r^3-144r^2-48r+144=0

48(r-3)(r+1)(r-1)

r-3=0 r+1=0 r-1=0

r=3, r=1, r= -1

Answer 2

r = 1

Explanation:

Find the intersection.

r = 1

r = 3

r = -1

r = 1