Factoring each Expressions

[wildthing1211]

I dont get this:

4g + 16
2d- 6
8a + 24
f squared+2f
6 - 3j
and
16n squared-40n

 

[ting]

This kind of thing.


4g + 16 = 4(g +4)


16n^2 - 40n = 8n(2n -5)


Distribute to check!


Can you do the others?

 

[wildthing1211]

But I dont know what ^ means. Im in Pre-Algebra and I still dont get it

 

[ting]

Your doing algebra

Remove the highest common factor

4g + 16 = 4 *g + 4*4

HCF is 4

= 4(g +4)


16n squared - 40n = 2 * 8 *n * n - 5 * 8 * n

HCF is 8n

= 8n(2n -5)


You want to have a go at the others?

 

[wildthing1211]

So is this right

6 - 3j=3(2-j)
2d - 6+3(2-d
8a + 24=8(a+3)
f^2 + 2f+fXf+2Xf

 

[ting]

Ya, couple of small corrections only, nice!


2d- 6 = 2(d -3)

8a + 24 = 8(a +3)

f (squared)+2f = f(f + 2)

6 - 3j = 3(2 - j)

 

[ryan_kidz]

But I dont know what ^ means. Im in Pre-Algebra and I still dont get it

^ means square
Exp: 2^3 = 8 (2X2X2)
3^2 = 9 (3x3)

 

[Denis]

But I dont know what ^ means. Im in Pre-Algebra and I still dont get it

^ means square
Exp: 2^3 = 8 (2X2X2)
3^2 = 9 (3x3)

not quite ryan: ^ means "to the power";
2^3 means 2 to the power 3 (or 2 cubed)
2^2 means 2 to the power 2 (or 2 squared)

So, wildthing, as example, 3^4 = 3 * 3 * 3 * 3 = 81 : capish?