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

b² - 7b - 8 = 0
(b + 1)(b - 8) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, either (b + 1) or (b - 8) must equal zero:

If (b + 1) = 0, b must equal -1
If (b - 8) = 0, b must equal 8

So the solution is that b = -1 or 8

The area of a triangle is equal to ½ base x height:

a = ½bh
a = ½ x 5 x 3 = \( \frac{15}{2} \) = 7\(\frac{1}{2}\)

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.

(9a)(7ab) + (8a²)(5b)
(9 x 7)(a x a x b) + (8 x 5)(a² x b)
(63)(a¹⁺¹ x b) + (40)(a²b)
63a²b + 40a²b
103a²b

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

A trapezoid is a quadrilateral with one set of parallel sides.