0. Review of College Algebra

Evaluate each expression for p = -4, q = 8, and r = -10. See Example 6. 3p - 2r

Evaluate each expression for p = -4, q = 8, and r = -10. See Example 6. (q + r)/ (q + p)

Factor each polynomial completely. See Example 6. 4x² - 28x + 40

Simplify each expression. Assume all variables represent nonzero real numbers. See Examples 2 and 3. - ( x³y⁵/z)⁰

Solve each linear equation. See Examples 1–3. 6(3x - 1) = 8 - (10x - 14)

Simplify each expression. Assume all variables represent nonzero real numbers. See Examples 2 and 3. (-6x²)³

Find each product. See Example 5. (2x + 5)³

Evaluate each expression for p = -4, q = 8, and r = -10. See Example 6. 5r/(2p - 3r)

CONCEPT PREVIEW Evaluate each expression. 2 • 5 - 10 ÷ 2

CONCEPT PREVIEW Evaluate each expression. 3a - 2b, for a = -2 and b = -1

Determine whether each equation is an identity, a conditional equation, or a contradiction. Give the solution set. See Example 4. 4(x + 7) = 2(x + 12) + 2(x + 1)

For what value(s) of x is |x| = 4 true?

Solve the equation. Then state whether it is an identity, conditional, or inconsistent equation. 

$\(\frac{x}{4}\)+\(\frac\)16=\(\frac{x}{3}\)$

Factor each polynomial completely. See Example 6. 25s⁴ - 9t²

Give (a) the additive inverse and (b) the absolute value of each number. 6