Quiz on Adding and Subtracting Radical Expressions

What must be the same in radical expressions to add or subtract them?

• The entire expression

• The numbers inside the radical

• The numbers outside the radical

• The coefficients

In the expression 3√6 - 4√6, what is the result?

• √6

• -7√6

• -√6

• 7√6

How can you simplify the expression -3√7 + 4√7 using variables?

• Set √7 = a, then 3a + 4a

• Set √7 = a, then -3a - 4a

• Set √7 = a, then 3a - 4a

• Set √7 = a, then -3a + 4a

What is the result of -11√21 - 11√21?

• 22√21

• -22√21

• 0

• -11√21

Which method can be used to simplify -10√11 - 11√11?

• Division

• Addition

• Substitution

• Multiplication

How can you simplify 3√27 to combine with -2√3?

• Rewrite 27 as 9×9

• Rewrite 27 as 3×3

• Rewrite 27 as 9×3

• Rewrite 27 as 3×9

What is the simplified form of 2√24?

• 6√4

• 4√6

• 8√3

• 2√6

In the expression 2√6 - 4√6, what is the result?

• 0

• 6√6

• -2√6

• 2√6

How do you simplify 54 to match a radical of 6?

• 54 = 6×9

• 54 = 9×6

• 54 = 6×6

• 54 = 9×9

What is the final solution for 2√6 + 9√6?

• 11√6

• 7√6

• 9√6

• 2√6