Year 8 Algebra

If x=5, substitute to find the value of 12-x

• 84

• -7

• 19

• 7

• -60

If m=3 and g=5, evaluate mg

• 35

• 15

• 8

• 2

• 53

In the expression 2y² + 7x² + 5x + 8, what is the coefficient of x²?

• 2

• 7

• 5

• 8

• 12

In the expression 2y² - 7x² + 5x + 8, what is the coefficient of x²

• 2

• 7

• -7

• -2

Combine like terms: 4x + 3x + 2y + y

• 7x + 2y

• 10xy

• 7x + 3y

• 7x² + 3y²

Combine like terms: 4x - 7x - 2y + 6y

• 1xy

• -3x - 4y

• 11x + 8y

• -3x + 4y

Factorise 6x+6

• 6(x+0)

• 6(x+1)

• 3(x+2)

• 6(x)

• 6(x+6)

If x= -2 and y= 3 find the value of x² + y

• 4

• 1

• -1

• 7

Expand the following: 3(2x+4)

• 6x + 6

• 2x + 4

• 6x + 12

• 5x + 7

• 6x + 4

Factorise 4x+10

• 4(x+10)

• 2(2x+5)

• 2(x+5)

• 2x(2x+1)