1. ## Factorising

Hello,

I'm not quite sure if im doing this right:

Is:

4x+20:
4(-5 + x)
factorized?

and also for:

2y+16

2(8 + y)

thanks

2. Originally Posted by Sphinxy1994
Hello,

I'm not quite sure if im doing this right:

Is:

4x+20:
4(-5 + x)
factorized?

and also for:

2y+16

2(8 + y)

thanks
$4x + 20 = 4\left(\frac{4x}{4} + \frac{20}{4}\right) = 4(x + 5)$

And:

$2y + 16 = 2\left(\frac{2y}{2} + \frac{16}{2}\right) = 2(y + 8)$

3. Originally Posted by Sphinxy1994
Hello,

I'm not quite sure if im doing this right:

Is:

4x+20:
4(-5 + x)
factorized?
There should not be a "-" before the 5.

and also for:

2y+16

2(8 + y)

thanks
Correct- although there is no reason in either this one or the first problem to reverse the order ("8+ y" instead of "y+ 8"), that's not a mathematical difference.