Exponents and Equivalent Expressions

Liam is trying to valuate the expression shown. \left(-7\cdot2\right)^4 Liam applies the power of a product law of exponents and writes the expression \left(-7\right)^4+\left(2\right)^4 Do you think Liam is correct or incorrect? Why?

• Liam is correct because the exponents are the same

• Liam is correct because he distributed the exponent ot each base.

• Liam is incorect because the bases are not the same.

• Liam is incorrect because the powers hsould be multiplied not add.

What does 3² mean?

• 3 x 2

• 3 x 3

• 2 x 2 x 2

• 729

• -243

• -18

• 27

Which of these is equivalent to the expression?

6.7D

• 6c + 3

• 6 x (c x 3)

• (c + 6) x 3

• 6 x c x 3 x c

Answer explanation

For two expressions to be equivalent, their variable and operations must match.

• F

• G

• H

• J

Tags

6.7D

Expressions that are equal, usually due to simplifying are: 

• Equivalent Expressions 

• Terms 

• Equation 

• Expression 

Which of these is equivalent to the expression?

• 6c + 3

• 6 x (c x 3)

• (c + 6) x 3

• 6 x c x 3 x c

Answer explanation

For two expressions to be equivalent, their variable and operations must match.

Which is equivalent to 4 x 4 x 4 x 4 x 4

• 4⁶

• 5⁴

• 4⁴

• 4⁵