(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Just wondering if there is a set rule here. What I'm not sure about is which side moves to the other.

2. Relevant equations

y = x^2

y = 8 -x^2

3. The attempt at a solution

x^2 = 8 - x^2

or

8 - x^2 = x^2

Option 1: Move left to right

= 8 - 2x^2

Option 2: Move right to left

= 2x^2 - 8

Which method are you supposed to use?

When finding zeroes you'll get the same answer either way, but sometimes (i.e. integrating) it seems like you'll get different answers depending on which way you went...

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Question about settings equations equal to eachother

**Physics Forums | Science Articles, Homework Help, Discussion**