Expression Substitution

• 84

• 19

• 12

• 6

• 25

• 10

• 15

• 7

• 46

• 36

• 12

• 22

Evaluate the algebraic expression: x² + 3

x = 7

• 46

• 52

• 50

• 58

Solve the Expression

x - 4 + 2(x)

if x = 8

• 16

• 20

• 12

• 6

• 18

• 12

• 6

• 24

3x + 8   if x = 2

• 13

• 14

• 15

• 16

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
3ab

• 10

• 12

• 15

• 36

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
2a

• 5

• 6

• 8

• 10

Evaluate -2x  if     x = 10

• -8

• 20

• -20