Linear Algebra Formative

Expand and simplify -3(a + 2b)

• -3a – 6b
• -3a + 2b
• -3a + 6b
• -6ab

Tags

CCSS.7.EE.A.1

Simplify 4a²b + 5ba² – 7ab² + 3ab²

• 5a²b²
• 9a²b – 10ab²
• 9a²b² – 4a²b²
• 9a²b – 4ab²

Tags

CCSS.7.EE.A.1

If 2(x + 3) = 20, then x=

• 6

• 7

• 14

• 15

Tags

CCSS.7.EE.B.4A

Factorise 12m + 8p completely

• 4(3m + 2p)
• 12(m + 8p)
• 2(6m + 4p)
• 20mp

Tags

CCSS.7.EE.A.1

The perimeter of this shape is

• 4x – 9
• 6x – 9
• 6x – 4
• 4x – 4

Tags

CCSS.7.EE.A.1

Expand and simplify 2(x + 3) – 5(x – 1)

• -7x + 1
• -3x + 1
• -3x + 11
• -7x + 11

Tags

CCSS.6.EE.A.3

can be simplified to

• 20 / (15a²) 
• 20a / (15a²) 
• 12a³
• 4 / (3a)

Tags

CCSS.HSA.APR.D.7

can be simplified to

• 5
• 5y
• 5y²
• 5y²(y – 7)²

Tags

CCSS.HSA.APR.D.7

Solving Equations:
2(6b + 1) = 4(b - 5) -2

• b = - 2.75
• b = -7/8
• b = 3
• b = -3

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Solve:
7x + 19 = -2x + 55

• 4
• 14.8
• 8.2
• -4

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3