Question

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)

Answer 1

did you try google

Answer 2

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

Answer 3

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

Answer 4

(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

Answer 5

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

Answer 6

options?

Answer 7

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

Answer 8

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/

Answer 9

that website is good ^

Answer 10

This is what the answer box looks like

Answer 11

?

Answer 12

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

Answer 13

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

Answer 14

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

Answer 15

Its called Odysseyware

Answer 16

homer would have loved it i am sure

Answer 17

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

Answer 18

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.

Answer 19

sorry can't help you there

Answer 20

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

Answer 21

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

Answer 22

how many terms you can write in that box ??

Answer 23

http://www.wolframalpha.com/input/?i=factor+6x%5E4+%2B+15x%5E3y%5E2+%2B+3x%5E2y%5E3+

Answer 24

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

Answer 25

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

Answer 26

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 ??

Answer 27

http://www.mathpapa.com/algebra-calculator.html