How do you solve 4x^(1/4) -3 = 21?

2 Answers
Jun 28, 2016

You just have to rearrange the equation so you have x on one side.

Explanation:

4x^(1/4)-3=21

4x^(1/4)=21+3

x^(1/4)=24/4

x=(24/4)^4

and then do the math!

Jun 28, 2016

x = 1296

Explanation:

Rearrange the equation first:

4x^(1/4) -3 = 21 rArr 4x^(1/4) = 21+3

4x^(1/4) = 24 " divide by 4"

x^(1/4) = 6

(x^(1/4))^4 = 6^4 " raise both sides to 4th power"

x = 1296