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Topic review (newest first)
- bobbym
- 2011-07-25 00:18:20
I know, remember that math is a precise language. If we are to understand each other we must agree and abide by its rules.
- zee-f
- 2011-07-25 00:15:02
ok that was by accident
- bobbym
- 2011-07-25 00:14:31
Correct, please do not change x to X, those are different variables and mean different things.
- zee-f
- 2011-07-25 00:12:46
x^2+2x-15
15*x=15x= 5 , -3
(x^2+5x)-(3x-15)
x(x+5)-3(x-5)
(x-3) (X+5)
- bobbym
- 2011-07-25 00:02:02
What did you get?
You should get ( x - 3 ) ( x + 5 )
- zee-f
- 2011-07-25 00:01:38
am ganna do 6 again and see what i did incorrect
- bobbym
- 2011-07-25 00:00:40
For 6) C is correct.
- anonimnystefy
- 2011-07-24 23:59:47
i think that if a polynomial can be factored by any other method than it can also be done by grouping.
- bobbym
- 2011-07-24 23:58:29
It does look like B is correct.
- anonimnystefy
- 2011-07-24 23:56:52
x^2-169=
x^2-13x+13x-169=
x(x-13)+13(x-13)=
(x+13)(x-13)???
- bobbym
- 2011-07-24 23:55:28
That is what I got too.
- anonimnystefy
- 2011-07-24 23:55:12
hi bobbym
could 19 be done by grouping?
- zee-f
- 2011-07-24 23:54:32
19 as e
- bobbym
- 2011-07-24 23:52:09
19? What did you enter for the answer?
- zee-f
- 2011-07-24 23:49:03
i got #6 and number 19 incorrect