Equations Review Algebra

Which of the following options shows like terms?

• 2x, xy

• 4x², 5x

• 2x, - 10x

• x²y, xy²

Simplify

3b + b - 2b

• 3b

• b

• 2b

Simplify 3a + 4b + 2a + 5b.

• 7a + 7b

• 5a + 9b

• 14ab

• None of the above

State the coefficient of mn in the following expression: n - 8mn + 7.

• 1

• 7

• 8

• -8

Which of the following is the correct expansion of:
5(r - 2)?

• 5r - 2
• 5r +2
• 5r + 10
• 5r - 10

Which of the following is the correct expansion of:
a(a - 10)?

• a² - 10a
• 2a - 10
• 2a² - 10
• a - 10a²

Solve for k:
6k = 30

• k = 36
• k = 24
• k = 180
• k = 5