Posted by **Christine** on Friday, August 7, 2009 at 10:52am.

Can someone please check my answers below for accurateness? The instructions are: Differentiate and simplify.

1) y=(2x^2+3x-1)(3x^2-5x-3)

y'=(4x+3)(3x^2-5x-3)+(2x^2+3x-1)(6x-5)

2) y=(5x^2+3x-1)(3x^2-5x-3)

y'=(10x+3)(4x^2-3)+(5x^2+3x-1)(8x)

3)y=6x^3-7x^2+5x-7+x^(5/3)-7/(x^3)

y'=18x^2-14x+5+5x^(2/3)+21/(x^4)

4) y=[5x^4-3x^3+6x^2-5x+7-x^(3/2)]/x^2

y'=10x-3+5/(x^2)-14/(x^3)+1/(2((sqrt)x)^3)

5) y=(5x^2-3x+7)(3x^2+7x-2)(6x^2+4x-5)

y'=(10x-3)(3x^2+7x-2)(6x^2+4x-5)+(5x^2-3x+7)(6x+7)(6x^2+4x-5)+(5x^2-3x+7)(3x^2+7x-2)(12x+4)

6) y=(7x^3-5x^2+6x-3)^12

y'=12(21x^2-10x+6)(7x^3-5x^2+6x-3)^11

7) y=(4x^2+3)^5(2x^2-1)^4

y'=[8x(4x^2+3)^4(2x^2-1)^3][5(2x^2-1)+2(4x^2+3)]

8) y=(4x^2+3x-5)^(4/5)

y'=[4(8x+3)]/[5(4x^2+3x-5)^(1/5)]

O.K. Bold the wrong answers or let me know which ones I should double check and fix. Thanks for your help and I really appreciate it because there are no answers to these questions in the back of the book, so I need to know if they are correct. Thank you once again!

- Math -
**Marth**, Friday, August 7, 2009 at 11:22am
On number 2, I believe you copied the question incorrectly.

Many of the problems can be simplified by foiling and adding terms (#1, 2 for example)

- Math -
**drwls**, Friday, August 7, 2009 at 11:35am
#2 is completly wrong

#3 has the wrong coefficent for the x^(2/3) term

#7 looks suspicious

- Math -
**Marth**, Friday, August 7, 2009 at 11:41am
#7 is correctly differentiated and simplified

## Answer This Question

## Related Questions

- 9th grade algebra (completing square) - Can you check the following? A1. (2x + 3...
- 9th grade algebra (factoring with quadratic) - Can you check the following ...
- Please check Algebra - Please take a look at my work and let me know if I made ...
- Pre-algebra - Solve. 29x – 2(9x – 0.455) = 10x + 0.525 Give us you thinking on ...
- Math - Find the equation of the tangent line 5x^2+y^2=14 at (1,3). P.S: It's ...
- Algebra 1 - 1) what is the simplified form of (x-2)(2x+3)? Use the distributive...
- math,factoring,help - Can someone please show me step by step how to do these. I...
- Math - I solved the equation below and got an answer of 9+-sqrt(57) but i don;t ...
- Algebra - almost done with Algebra...help! 2 3x – 6(2x – 0.055) = 10x + 0.515 I ...
- how about his one - -7+ 5x = 10x-2? im not sure I know its -1, but im not sure ...

More Related Questions