Revision Algebra Year 8

5pr x 2qr

• 10pqr²

• 7pqr

• 10qrp

• 10p²qr

If  $7xy\ \times5z\ =35xyz$ ,
then,  $35xyz\ \div7x\ =?$  

• yz

• 5yz

• 5z

• None of the above

 $5xy\ +\ 7\ +\ 3xy\ -12\ =$  

• 8y - 5

• 2xy +5

• 15xy -84

• 8xy - 5

Simplify

3pq + 4rst + 6qp -12rst =

• 3pq + 12rst

• 9pq - 8rst

• 8pq - 9rst

• 18pq - 9rst

Expand

4x(x - 5)

• 4x² - 20

• 8x - 20

• 4xx - 5

• 20 - 4x

Expand

5f(2f + 7g) =

• 10f² + 35f

• 10fg + 35f

• 10f + 35

• 10f² + 35fg

Given x = 4 and y = -5.

Find the value of 9x + y

• -41

• -31

• 31

• 41

Given x=2 and y = -3.

Find value of x + xy²

• 40

• -15

• 20

• -20

Given p = 4 and q = 3.

Find the value of p² - 5q + 8

• 9

• 1

• 10

• 3

Expand and simplify.

3(5x + 2y) - 7(2x - 3y) =

• 2x + y

• 23 x -27

• x + 27y

• 27y - x