If ∫0a(3x2−2x)dx=4\int_{0}^{a} (3x^2 - 2x) dx = 4∫0a(3x2−2x)dx=4, which equation must aaa satisfy?
a3−a2=4a^3 - a^2 = 4a3−a2=4
a3−a2=2a^3 - a^2 = 2a3−a2=2
3a2−2a=43a^2 - 2a = 43a2−2a=4
a2−a3=4a^2 - a^3 = 4a2−a3=4