Quiz 1 Review

Solving

100

10r - 4 - 6r = -8

r = -1

200

5(3n - 6) - 5 = 2(n + 2)

n = 3

300

8² + x² = 17²

x = 15

400

(1/4)(8x-20) = 3x + 7

x = -12

500

3/(x-2) = 6/(x+4)

x = 8

Factoring

100

12x⁴ - 8x³ + 20x

4x(3x³ - 2x² + 5)

200

16x² - 9

(4x - 3)(4x + 3)

300

x² - 5x - 14

(x - 7)(x + 2)

400

2x² + 8x - 10

2(x + 5)(x - 1)

500

4x² + 11x - 3

(4x - 1)(x + 3)

Simplify Polynomials

100

(3x² + 2x + 5) + (4x + 9)

3x² + 6x + 14

200

(4x² - 5x + 8) - (x² + 2x +11)

3x² - 7x - 3

300

(x + 6)(x - 4)

x² + 2x - 24

400

(2x + 5)(2x - 3)

4x² + 4x - 15

500

(x² - 6x - 3) - 2(3x² - 4x + 9)

-5x² + 2x - 21

Systems

300

y = 2x + 3

3x - y = 7

(10, 23)

400

3x + 4y = 28

2x - 3y = -4

(4, 4)

500

3x = 4y - 24

2y + 2x = -2

(-4, 3)

More solving

100

(x + 2)(x - 6) = 0

x = -2, 6

200

x² + 2x - 8 = 0

x = -4, 2

300

4x² = 36

x = -3, 3

400

5x² = 30x

x = 0, 6

500

x² - 18 = 3x

x = -3, 6