Radical Equations and Extraneous Roots — Unit test

Question 1

What is the following quotient?

Revolt · Accepted Answer

2 StartRoot 3 EndRoot

Question 2

Which of the following is an extraneous solution of ?

Revolt · Accepted Answer

x = –6

Question 3

What is the range of the function ?

Revolt · Accepted Answer

y greater-than-or-equal-to 0

Question 4

Which of the following is the graph of ?

Revolt · Accepted Answer

On a coordinate plane, an absolute value curve opens up and to the right in quadrant 4 and starts at (0, 0). It goes through (5, negative 9).

Question 5

What is the simplified form of the following expression? Assume .

Revolt · Accepted Answer

StartFraction RootIndex 3 StartRoot 6 x squared y squared EndRoot Over 2 y EndFraction

Question 6

Which equation can be rewritten as x + 4 = x2? Assume

Revolt · Accepted Answer

StartRoot x + 4 EndRoot = x

Question 7

Which function has the same domain as ?

Revolt · Accepted Answer

y = StartRoot 2 x EndRoot

Question 8

What is the domain of the function ?

Revolt · Accepted Answer

Negative infinity less-than x less-than infinity

Question 9

What is the following quotient?

Revolt · Accepted Answer

2 ✓ Correct

Question 10

What is the domain of the function ?

Revolt · Accepted Answer

0 less-than-or-equal-to x less-than infinity

Radical Equations and Extraneous Roots — Unit test Answers