The first step to solve a quadratic expression that's not set to zero is to solve the equation so that it is set to zero:

c² + 8c + 10 = -c - 4
c² + 8c + 10 + 4 = -c
c² + 8c + c + 14 = 0
c² + 9c + 14 = 0

Next, factor the quadratic equation:

c² + 9c + 14 = 0
(c + 2)(c + 7) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, either (c + 2) or (c + 7) must equal zero:

If (c + 2) = 0, c must equal -2
If (c + 7) = 0, c must equal -7

So the solution is that c = -2 or -7

The volume of a cube is height x length x width:

v = h x l x w
v = 9 x 7 x 1
v = 63

To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the < sign and the answer on the other.

-c - 2 < \( \frac{c}{-8} \)
-8 x (-c - 2) < c
(-8 x -c) + (-8 x -2) < c
8c + 16 < c
8c + 16 - c < 0
8c - c < -16
7c < -16
c < \( \frac{-16}{7} \)
c < -2\(\frac{2}{7}\)

An equation is two expressions separated by an equal sign. The key to solving equations is to repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.

An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.