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 - 5c + 23 = 5c - 1
c² - 5c + 23 + 1 = 5c
c² - 5c - 5c + 24 = 0
c² - 10c + 24 = 0

Next, factor the quadratic equation:

c² - 10c + 24 = 0
(c - 4)(c - 6) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, either (c - 4) or (c - 6) must equal zero:

If (c - 4) = 0, c must equal 4
If (c - 6) = 0, c must equal 6

So the solution is that c = 4 or 6

A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.

To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.

8a⁵ - 7a⁵ = 1a⁵

The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:

c = πd
c = π(2 * r)
c = π(2 * 6)
c = 12π

An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.