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CG Technical Area => Help Section => Topic started by: Wholegrain on July 28, 2010, 12:42:25 AM

Title: more math
Post by: Wholegrain on July 28, 2010, 12:42:25 AM

1.

Simplify (4x3y3 - 2x2y2 + 4) - (-3x3y3 - 5x2y2 - 8)

7x3y3 + 3x2y2 + 12
x3y3 - 7x2y2 - 4
7x3y3 - 7x2y2 - 4
x3y3 + 3x2y2 + 12
none of these

POINT VALUE: 1.0 points

2.

If A=3x2-2x-7 and B=x2+9, then what is their sum, A+B?

5x2-2x+2
4x2-2x-2
4x2+2
4x2-2x+2
none of these

POINT VALUE: 1.0 points

3.

Multiply and simplify.


6x2(2x3 - 8x + 5)

12x5 - 48x3+30x2
8x5 - 14x3 + 11x2
12x6 - 48x2 + 30x
12x6 - 18x2
none of these


help me :(

Title: Re: more math
Post by: vinnylord on July 28, 2010, 07:17:20 AM

ur either to dumb to do it or to lazy  :o

Title: Re: more math
Post by: Wholegrain on July 28, 2010, 09:49:56 AM

you guys suck :(

Title: Re: more math
Post by: JuNk^m@st3r on July 28, 2010, 02:44:07 PM

nope, me neither, doesnt look like the math i did in school

Title: Re: more math
Post by: Christovski on July 28, 2010, 04:28:21 PM

dude which x's are multiply and which x's are the variable 'x' cause you used the same thing for both, use the * on the numpad for multiplication so it not confused with 'x' as a variable :P

Title: Re: more math
Post by: crypto on July 28, 2010, 06:27:16 PM

The x's are all variables. Any numbers following variables must be exponents and should be preceded by a caret but that's okay. Bearing that in mind:

1. 7x^3y^3 + 3x^2y^2 + 12
From first post: 7x3y3 + 3x2y2 + 12

2. 4x^2 – 2x + 2
From first post: 4x2-2x+2

3. 12x^5 – 48x^3 + 30x^2
From first post: 12x5 - 48x3+30x2

Sorry if I'm wrong. Math isn't my forte. (Last year I took AP Statistics, AP math for idiots; I don't think I've done real math for ages lol.)