To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:

(y + 3)(y + 8)
(y x y) + (y x 8) + (3 x y) + (3 x 8)
y² + 8y + 3y + 24
y² + 11y + 24

The volume of a cylinder is πr²h:

v = πr²h
v = π(1² x 2)
v = 2π

To solve this equation, isolate the variable for which you are solving (a) on one side of the equation and put everything else on the other side.

-5a + 2x = 8a + 4x - 3
-5a = 8a + 4x - 3 - 2x
-5a - 8a = 4x - 3 - 2x
-13a = 2x - 3
a = \( \frac{2x - 3}{-13} \)
a = \( \frac{2x}{-13} \) + \( \frac{-3}{-13} \)
a = -\(\frac{2}{13}\)x + \(\frac{3}{13}\)

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 coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.