Quadrant(s), 175

Quadratic equations, 105–118

• applications of, 113–114

• completing the square for solving, 109–111

• with complex solutions, solving, 126–127

• discriminant and, 112–113, 126–127

• factoring method for solving, 106–108

• quadratic formula for solving, 111–112

• square root method for solving, 108

Quadratic formula, 111–112

Quadratic functions, 318–331

• applications using, 324–326

• defined, 318

• graphing, 320–324

• standard form of, 319–321

Quadratic inequalities, test-point method for solving, 151–152

Quadratic in form equations, 137–138

Quartic polynomials, 333

Queen bee, 716

Quetelet, Lambert, 482

Quintic polynomials, 333

Quotient(s), 13. See also Division

• converting decimals to, 3–4

• difference, 243–244

• of functions, 282

Quotient rule for exponents, 22–23, 27

Quotient rule for logarithms, solving logarithmic equations using, 480–481