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Identify extraneous solutions in radical equations
Grade Level
SAT Prep
M135 Identify extraneous solutions in radical equations
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When solving -3x - 1 = √(4x
2
+ 12x + 129) + 6, the candidates after squaring are x = -8 and x = 2. Which statement is true?
A
both candidates satisfy the original equation
B
both candidates are extraneous
C
x = -8 is extraneous, and x = 2 satisfies the original equation
D
x = 2 is extraneous, and x = -8 satisfies the original equation
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