487,376 views
20 votes
20 votes
What is the solution to the equation? 4√x-4 =3

A. -8 B. 16 C. 85 D. no solution

User Encc
by
2.9k points

2 Answers

10 votes
10 votes

Answer:

Explanation:

4√(x-4) = 3

√(x-4) = 3/4

Square both sides:

x - 4 = 9/16

x = 4 + 9/16

x = 4 9/16.

User Koh
by
3.5k points
13 votes
13 votes


{\qquad\qquad\huge\underline{{\sf Answer}}}

Here we go ~


\qquad \sf  \dashrightarrow \: \sqrt[4]{x - 4} = 3


\qquad \sf  \dashrightarrow \: x - 4 = (3) {}^(4)


\qquad \sf  \dashrightarrow \: x - 4 = 81


\qquad \sf  \dashrightarrow \: x = 81 + 4


\qquad \sf  \dashrightarrow \: x = 85

So, the correct choice is 85

User Robertobatts
by
3.2k points
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