Step-by-step explanation:
x2-x-12<0
x2-x<12
x=12
X^2 - 4x + 2
d = b^2 - 4ac, where a = 1, b = -4 and c = 2
d = (-4)^2 - 4 x 1 x 2
d = 16 - 8
d = 8
<span>When the product of two numbers is one</span>
You can use calculus ( related rates). Given the rate os change of the radius for example you can find the rate of change of volume using differential calculus.