Question

Which pair of expressions are equivalent?

Comments

2. Tyrone wrote an equivalent expression for . His equivalent expression was . What error did Tyrone make?

Tyrone neglected to combine the x terms.

Tyrone added the constants instead of subtracting them.

Tyrone neglected to add the coefficients of the n terms.

Tyrone made an error when he added the constants.

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3. What are the like terms in the expression ?

8, 

, 

8,  

, , 

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4. Which expression is equivalent to the expression ?

.

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5. Identify the terms and like terms in the expression.

Which statements are true? Check all that apply.

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The constants, –3 and –8, are like terms.

The terms  are like terms.

The terms in the expression are .

The terms  have variables, so they are like terms.

The expression contains six terms.

The terms  are like terms.

Like terms have the same variables raised to the same powers.

The expression contains seven terms.

Answer 1

1. 3
2. 1
3. 2
4. 1
5. 1 2 3 5 7