Math Ready Fall Final Review

Solving for x

100

4 - 5 = x

x = -1

200

4x = 4

x = 1

300

43 - 58 = x + 2

x = -17

400

7 + 5 - 3 + 1 = x

x = 10

500

5x + 3 = 15

x = 12/5 or 2.4

Plugging in x

100

2x + 6, x = 5

16

200

x², x = 3

9

300

-(x)², x = 6

-36

400

x^x, x = 3

27

500

-1 * -x, x = -1

-1

Distributing

100

4(x + 1)

4x + 4

200

4x(x - x)

0

300

(x + 6)(x + 4)

x² + 10x + 24

400

(-2x + 2)(x² + x + 4)

-2x³ - 6x + 8

500

(x + 2)(x + 2)(x + 2)

x³ + 6x² + 12x + 8

Factoring

100

x² - 13x + 12 = 0

(x - 1)(x - 12)

x = 1 and x = 12

200

x² - x - 12 = 0

(x + 3)(x - 4)

x = -3 and x = 4

300

x² - 49x = 0

x(x - 49) or (x + 0)(x - 49)

x = 0 and x = 49

400

5x³ + 50x² + 125x = 0

5x(x + 5)(x + 5)

x = 0 and x = -5

500

4x² + 16x + 15 = 0

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

x = -5/2 and x = -3/2

Mixed/Other

100

Solve for x

10x = 1

x = 1/10 or 0.1

200

Simply -x + x

0

300

Put in Standard Form

3x³ - 15x + x⁴ + 17 + 6x²

x⁴ + 3x³ + 6x² - 15x + 17

400

Where does the graph of x² - 4 cross the x axis

at x = 2 and x = -2

500

Simplify 2x * 2x + 3x + 7x + 24 - 36 - x²

3x² + 10x - 12