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 + 2)(y - 2)
(y x y) + (y x -2) + (2 x y) + (2 x -2)
y² - 2y + 2y - 4
y² - 4

The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:

a = ½(b + d)(h)
a = ½(2 + 8)(3)
a = ½(10)(3)
a = ½(30) = \( \frac{30}{2} \)
a = 15

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 + 3a = 11a

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.

-8a - 8 > \( \frac{a}{-7} \)
-7 x (-8a - 8) > a
(-7 x -8a) + (-7 x -8) > a
56a + 56 > a
56a + 56 - a > 0
56a - a > -56
55a > -56
a > \( \frac{-56}{55} \)
a > -1\(\frac{1}{55}\)

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