Equivalent terms

**klooless** · July 10th 2009, 03:50 PM

For some strange reason I don't know how these equal each other;

u^2/ u^2-4 = 1+ 4/ u^2-4

help?

**Unenlightened** · July 10th 2009, 04:26 PM

Originally Posted by klooless

For some strange reason I don't know how these equal each other;

u^2/ u^2-4 = 1+ 4/ u^2-4

help?

$\frac{u^2}{u^2-4} = 1 + \frac{4}{u^2 - 4}$

Multiply both sides by ${u^2 - 4}$
Gives
$u^2 = u^2 - 4 + 4$

Your brackets may have caused some confusion, perhaps...

**klooless** · July 10th 2009, 04:47 PM

Most likely, yes. but what step is taken to get from the left to the right side?

**skeeter** · July 10th 2009, 06:45 PM

$\frac{u^2}{u^2-4} = \frac{u^2-4+4}{u^2-4} = \frac{u^2-4}{u^2-4} + \frac{4}{u^2-4} = 1 + \frac{4}{u^2-4}$

Thread: Equivalent terms

LinkBack

Thread Tools

Display

Equivalent terms

Similar Math Help Forum Discussions

How are these two equivalent?

How are these two equivalent

Equivalent

Equivalent expression for sin(-7pi/6) in terms of the related acute angle.

Equivalent Expression in terms of Related Acute Angle [Year 11 Advanced Functions]

Search Tags