# Math Help - equating powers - quick question

1. ## equating powers - quick question

If I have:

If I am comparing first order terms, i.e

would this give

I'm not sure if the orders will "cancel" each other or anything since I am dividing?

Thanks in advance!

2. Originally Posted by hunkydory19
If I have:

If I am comparing first order terms, i.e

would this give

I'm not sure if the orders will "cancel" each other or anything since I am dividing?

Thanks in advance!

Correct ! By equating the constant term both sides :

$(1-z_0)x_0 ' = m \chi L y_0 x_0 \implies$

$x_0 ' = \frac{ m \chi L y_0 x_0 }{ 1 - z_0 }$