SOLUTION: How do i go about solving questions such as 4x^2/3= 18 and 3^x=75 I am to solve for x.

Question 305648: How do i go about solving questions such as 4x^2/3= 18 and 3^x=75
I am to solve for x.
Found 2 solutions by Alan3354, mananth:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
How do i go about solving questions such as
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4x^2/3= 18

Cube both sides

x = � sqrt(4.5^3) = �sqrt(91.125)
x =~ � 9.5459
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Take the log of both sides
3^x=75
xlog(3) = log(75)
x = log(75)/log(3)
x =~ 3.929947

Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
4x^2/3= 18 and 3^x=75

4x^2 / 3 = 18
4x^2= 54
x^2= 54/4
X^2 = 13.5
+ / - x= sqrt 18
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