To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)

-6a(a - y)
-6(3)(3 + 5)
-6(3)(8)
(-18)(8)
-144

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).

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:

z² - z - 12 = -4z - 2
z² - z - 12 + 2 = -4z
z² - z + 4z - 10 = 0
z² + 3z - 10 = 0

Next, factor the quadratic equation:

z² + 3z - 10 = 0
(z - 2)(z + 5) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, either (z - 2) or (z + 5) must equal zero:

If (z - 2) = 0, z must equal 2
If (z + 5) = 0, z must equal -5

So the solution is that z = 2 or -5

A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.

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.

8a + 2a = 10a