# Math Help - basic algebra

1. ## basic algebra

pls help with following questions! im really stuck... and pls explain with full setting out,,, im w8ing for a genius to save me!!!
(s+1)(3s+2)
(d-2)(3d+5)
(a+3)(4-1)
(a+b)(a-b)
(3s-t)^2
(h-5)(2h+4)
(5-f)^2
(1+2x)(4+3x)
(h+3)(3h-4)
(1+7k)(5-k)
(3s-5t)(4s-2t)
(8-5r)(1-r)
(2y-7z)(5y-4z)
(2d-3c)(2d+3c)
(t+7)^2
(3+y)^2
(a+2b)^2
(2e+3f)^2
(p-5)^2
(x-y)^2
(d-2e)^2
(3p-5q)^2
I'm Sorry for the huge workload
thanks SO MUCH

2. Originally Posted by Graffitixgirl
pls help with following questions! im really stuck... and pls explain with full setting out,,, im w8ing for a genius to save me!!!
(s+1)(3s+2)
(d-2)(3d+5)
(a+3)(4-1)
(a+b)(a-b)
(3s-t)^2
(h-5)(2h+4)
(5-f)^2
(1+2x)(4+3x)
(h+3)(3h-4)
(1+7k)(5-k)
(3s-5t)(4s-2t)
(8-5r)(1-r)
(2y-7z)(5y-4z)
(2d-3c)(2d+3c)
(t+7)^2
(3+y)^2
(a+2b)^2
(2e+3f)^2
(p-5)^2
(x-y)^2
(d-2e)^2
(3p-5q)^2
I'm Sorry for the huge workload
thanks SO MUCH
You have got to be kidding!!

Do yourself a favour - read this.

3. I can only assume that your question is to expand the following expressions.
What problem are yo having here ? have you been showed how to do anythng like this before ?

$(s+1)(3s+2) = s \cdot 3s + s \cdot 2 + 1 \cdot 3s + 1 \cdot 2$
$\Rightarrow (s+1)(3s+2) = 3s^2 + 2s + 3s + 2$
$\Rightarrow (s+1)(3s+2) = 3s^2 + 5s + 2$

4. Originally Posted by mr fantastic
You have got to be kidding!!

Do yourself a favour - read this.
oh w8
mayb i havent explained the situation properly.
im 12, you see. not a kind a genius uni student
im sorry
can someone just explain ONE of the equations?

5. Originally Posted by Graffitixgirl
oh w8
mayb i havent explained the situation properly.
im 12, you see. not a kind a genius uni student
im sorry
can someone just explain ONE of the equations?
When i was 12 I knew how to read. someone has explained how to do one of them, Read my post.

you will be surprised how many of you academic issues can be solved with a tiny bit of reading.

N.B Please make an effort to use correct English.

6. can i try one?
so....
(a+b)(a-b)
=a^2-ab+ab-b^2?
so...
=a^2-b^2?

7. Originally Posted by Graffitixgirl
can i try one?
so....
(a+b)(a-b)
=a^2-ab+ab-b^2?
so...
=a^2-b^2?
Yes

8. Originally Posted by Graffitixgirl
can i try one?
so....
(a+b)(a-b)
=a^2-ab+ab-b^2?
so...
=a^2-b^2?
Well done.

9. is it ok if i ask more l8r?
thx so much 4 ur encouragement

(3st)^2

11. Originally Posted by Graffitixgirl
(3st)^2
$(3st)^2 =3^2s^2t^2$

You really should take some time to actually learn all this basic algebra as opposed to rushing your homework to please your teacher.

I am not going not give you any further help. I suggest you do what you can and ask your teacher for help with what your stuck on tomorrow

12. Originally Posted by Graffitixgirl
(3st)^2
$(3st)^2$ => $3^2s^2t^2$ then $9s^2t^2$

13. trial:
(h-5)(2h+4)
=2h^2+4h-10h-20
=2h^2-6h-20

14. am i correct?

15. If I was a moderator I would close this thread.