+0  
 
0
70
4
avatar

150=(1+x)^4

 

Forgot how to solve this.  Been years since advanced algebra.

Guest May 18, 2017
Sort: 

4+0 Answers

 #1
avatar
0

This isn’t advanced algebra. It’s basic algebra.

Guest May 18, 2017
 #2
avatar+17512 
0

150  =  (1 + x)4

Take the fourth root of both sides; the fourth root of 150 is approximately 3.4996.

3.4996  =  1 + x

Subtract 1     --->     x  =  2.4996     (approximately)

geno3141  May 18, 2017
 #3
avatar
0

It’s not that basic, Geno. There are two solutions.

Guest May 18, 2017
 #4
avatar+74982 
+1

 

150   = ( 1 + x) ^4         take the  positive/negative 4th root

 

± (150)^(1/4)  =  1 + x    subtract 1 from both sides

 

± (150)^(1/4) -  1   =  x

 

The two (real)  answers  are

 

x = (150)^(1/4) -  1  ≈ 2.499

 

Or

 

x  = - (150)^(1/4) -  1  ≈  -4.499

 

 

 

cool cool cool

CPhill  May 18, 2017
edited by CPhill  May 18, 2017

5 Online Users

avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details