Answer:
(5a^2-4)*(25a^4+20a^2+16)
Step-by-step explanation:
Answer: the second one
Step-by-step explanation:
V = 4/3 * pi * r^3
V= 4/3 3.14 * 3^3
V = 4/3 *3.14 * 27
27 * 3.14 = 84.78
V = 4/3 * 84.78 = <span>113.04
V = </span><span>113.04
hope this helps</span>
X decreased by the square of nine
x - 9^2 = x - 81