## LeAnn01Xxx one year ago Somebody please help me. This Odysseyware program is really stressing me out. :'( 1. Find the sum of (5x3 + 3x2 - 5x + 4) and (8x3 -5x2 + 8x + 9). 2. Add: 2a3 + 5a - 7 and 5a2 - 6a + 12 3. Subtract: 11a2 + 42a - 6 from 14a 2 - 24a + 7. 4. (-6.7x 2 + 2.3x y + 5.2) - (-14.9x 2 - 3.5x y + 7.1)

1. automaticloveletter

2. LeAnn01Xxx

Yes and I cant find any math website that can help me with them.

3. anonymous

1 Distribute sum groups 5x3(8x3−5x2+8x+9)+3x2(8x3−5x2+8x+9)−5x(8x3−5x2+8x+9)+4(8x3−5x2+8x+9) 2 Distribute 40x6−25x5+40x4+45x3+3x2(8x3−5x2+8x+9)−5x(8x3−5x2+8x+9)+4(8x3−5x2+8x+9) 3 Distribute 40x6−25x5+40x4+45x3+24x5−15x4+24x3+27x2−5x(8x3−5x2+8x+9)+4(8x3−5x2+8x+9) 4 Distribute 40x6−25x5+40x4+45x3+24x5−15x4+24x3+27x2−40x4+25x3−40x2−45x+4(8x3−5x2+8x+9) 5 Distribute 40x6−25x5+40x4+45x3+24x5−15x4+24x3+27x2−40x4+25x3−40x2−45x+32x3−20x2+32x+36 6 Gather like terms 40x6+(−25x5+24x5)+(40x4−15x4−40x4)+(45x3+24x3+25x3+32x3)+(27x2−40x2−20x2)+(−45x+32x)+36 7 Simplify 40x6−x5−15x4+126x3−33x2−13x+36

4. automaticloveletter

(5x^3 + 3x^2 - 5x + 4) + (8x^3 - 5x^2 + 8x + 9)=5x^3 + 3x^2 - 5x + 4 + 8x^3 - 5x^2 + 8x + 9=13x^3 - 2x^2 + 3x + 13

5. LeAnn01Xxx

The answer that it gives is too short for those answers. Or whatever that is.

6. automaticloveletter

options?

7. P0sitr0n

usually how you do this is by adding same powers of x together, i.e. $5x^3 + 3x^2 - 5x + 4+8x^3 -5x^2 + 8x + 9=(5x^3+8x^3)+(3x^2-5x^2)+(-5x+8x)+(4+9)=13x^3-2x^2+3x+13$

8. P0sitr0n

However, if you know how to do these operations, and simply want to save time (or check your answers), you should try http://www.wolframalpha.com/

9. automaticloveletter

that website is good ^

10. LeAnn01Xxx

This is what the answer box looks like

11. LeAnn01Xxx

?

12. Nnesha

$$\huge\color{green}{{\rm combine~\color{reD}{LIKE}~terms}}$$

13. Nnesha

sum = add so $\huge\rm 5x^3 + 3x^2 - 5x + 4 +5a^2 - 6a + 12$ add coefficient of same variables (same degree) combine constant terms

14. misty1212

that is one ugly answer box! what kind of system is this?

15. LeAnn01Xxx

Its called Odysseyware

16. misty1212

homer would have loved it i am sure

17. misty1212

the last one looks the most annoying want to do that one fast?

18. LeAnn01Xxx

The answer boxes are all the same for those questions. And I have no idea what to do to get answers that are small enough to fit in the boxes.

19. misty1212

20. LeAnn01Xxx

Im stuck on number 9 too. Factor completely, then place the answer in the proper location on the grid. Write the answer in descending powers of x. 6x 4 + 15x 3 y 2 + 3x 2 y 3

21. misty1212

they have you working on a machine, let the machine do it

22. Nnesha

how many terms you can write in that box ??

23. misty1212
24. Nnesha

http://prntscr.com/7g5md9 ur answer is not right

25. LeAnn01Xxx

Each question box is different. Sometimes it goes from like 4 boxes to like two rows of boxes. @Nnesha And it doesn't do it itself. I have to figure out the answer and drag the number and symbols to the purple and place them in order. @misty1212

26. Nnesha

alright that's right it depends on the answer $\huge\rm 5x^3 + 3x^2 - 5x + 4 +5a^2 - 6a + 12$ combine like terms what did you get ??

27. anonymous