AnswersCMS 2026-2027 NC Math 2 CREDIT RECOVERYRadical Equations and Extraneous Roots

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1
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What is the solution of square root of 2 x plus 4 end root is equal to 16 ?

A
x is equal to 6
B
x is equal to 72
C
x is equal to 126
D
no solution
2
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Which equation is equivalent to square root of x squared plus 81 end root is equal to x plus 10 ?

A
x plus 9 is equal to x squared plus 20 x plus 100
B
x plus 9 is equal to x plus 10
C
x squared plus 81 is equal to x squared plus 20 x plus 100
D
x squared plus 81 is equal to x squared plus 100
3

Which equation can be rewritten as x plus 4 is equal to x squared ? Assume x is greater than 0

A
square root of x plus 4 end root is equal to x
B
square root of x squared plus 16 end root is equal to x
C
square root of x plus 2 is equal to x
D
square root of x plus 2 end root is equal to x
4

Which equation is related to square root of x plus 10 end root minus 1 is equal to x ?

A
x plus 10 is equal to x squared minus 1
B
x plus 10 is equal to x squared plus 1
C
x plus 10 is equal to x squared plus 2 x plus 1
D
x plus 10 is equal to x squared plus x plus 1
5

Which equation is equivalent to square root of x plus 11 is equal to 15 ?

A
square root of x is equal to 15 plus 11
B
x plus 11 is equal to 225
C
square root of x is equal to 15 minus 11
D
x plus 121 is equal to 225
6

What is the solution of x is equal to 2 plus square root of x minus 2 end root ?

A
x is equal to 2 or x is equal to 3
B
no solution
C
x is equal to 2
D
x is equal to 3
7

What is the solution of square root of x squared plus 49 end root is equal to x plus 5 ?

A
x is equal to 12 fifths
B
x is equal to negative 12 fifths
C
x is equal to negative 6 or x is equal to negative 3
D
no solution
8

Which of the following is a radical equation?

A
x square root of 3 is equal to 13
B
square root of x plus 3 is equal to 13
C
x plus 3 is equal to square root of 13
D
x plus square root of 3 is equal to 13
9

What is the solution of cube root of x plus 8 is equal to negative 4 ?

A
x is equal to negative 72
B
x is equal to negative 66
C
x is equal to 58
D
no solution
10

Which of the following is a radical equation?

A
7 square root of x is equal to 14
B
x plus square root of 5 is equal to 12
C
x squared is equal to 16
D
3 plus x square root of 7 is equal to 13

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