Expressions and Equations Review

Solve. x+21=0

• 21

• -21

• 0

Solve. x-2=21

• 2

• 21

• 23

• -19

Simplify. 5(r+9)-5

• 5r - 4

• 5r - 40

• 5r + 40

• 5r + 4

Simplify. 9x + 8x - 4 -7y

• 17x - 7y - 4

• 9x -4 -7y

• -17x -11

• 17x -7y

-2(x-3)

• 2x - 3

• -2x - 3

• -2x + 6

• -2x - 6

Solve   2x -7 = -23

• -8

• 8

• -7

x² = 121

• 11,-11

• 11

• -11

• 10,-10

x² = 36

• 6

• 18

• 6, -6

• -6

m³ = 512

• 8

• ± 8

• 7

• ± 9

a³ = 216

• 6

• ± 6

• 108

• -6