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hoa [83]
2 years ago
9

Given the equation −4square root of x minus 3 = -12, solve for x and identify if it is an extraneous solution.

Mathematics
1 answer:
IRINA_888 [86]2 years ago
4 0

Answer:

D.    x = 12, solution is not extraneous

Step-by-step explanation:

-4√(x - 3) = -12

Divide both sides by -4

√(x - 3) = 3

Square both sides

x - 3 = 9

add 3 to both sides

x = 12

To see if it's extraneous plug into original problem

-4√(12 - 3) = -12

-4√(9) = -12

-4 * 3 = -12

-12 = -12

not extraneous

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