Which expressions represent the difference of exactly two expressions? Choose 3 answers: Choose 3 answers: (Choice

a. A 6 (x+7) - 26 (x+7) - 26 (x+7) - 26, left parenthesis, x, plus, 7, right parenthesis, minus, 2 (Choice

b. B - 2j-2j-2jminus, 2, j (Choice

c. C 4f-2g4f-2g4f-2g4, f, minus, 2, g (Choice

d. D 3xyz-103xyz-103xyz-10

Solution

To find out which expressions represent the difference of exactly

two expressions

a) 6 (x+7) - 2

This can be simplified as

6x + 42 - 2

6x + 40

Clearly this does not represent difference of the two

expressions.

b) - 2j

Clearly this represents a single expression, this does not represent

a difference of 2 expression.

c) 4f - 2g

Here we have 2 different expressions 4f and 2g

Difference of these 2 expressions are 4f - 2g

Hence, this option represent difference of exactly two

expression

d) 3xyz - 10

3xtz - 10 represnts a single expression

Here we have a single expression

Therefore it does not represent difference of exactly 2

expression.