The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:

c² - 4c - 5 = 0
(c + 1)(c - 5) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, either (c + 1) or (c - 5) must equal zero:

If (c + 1) = 0, c must equal -1
If (c - 5) = 0, c must equal 5

So the solution is that c = -1 or 5

The perimeter of a triangle is the sum of the lengths of its sides:

p = x + y + z
p = 11cm + 14cm + 9cm = 34cm

To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.

6a x 5b = (6 x 5) (a x b) = 30ab

A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).

A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).