y7 algebra revision

Simplify a x a x a

• a²

• a³

• 3a

• 3+a

Simplify 3a x 2b

• 5ab

• 5a + b

• 6ab

• 6 + ab

Simplify 3a + 2b + 5a + b

• 8a + 3b

• 8a² + 3b²

• 5a + 6b

• 8a + 2b

Simplify 5a + 2b - 2a + 3b

• 7a + 5b

• 7a - b

• 3a - b

• 3a + 5b

Expand 2(3x - 2)

• 2x

• 6x + 4

• 6x - 4

• 6x - 2

Expand 2a(4a + 3)

• 8a² + 6a

• 8a² + 5a

• 8a² + 2a

• 8a + 6a

If a = 3 and b= 2 find the value of 5a - 3b

• 2

• 9
• 12

• 21

If a = 3 work out the value of a² + 2a

• 18

• 15

• 12

• 9

If a = -3 work out the value of 5 - a

• 2
• 15

• 3
• 8

If a = -2 and b = 3 work out the value of 3a + b

• -9

• -3

• 3

• 4