Question

Find the difference of (−5x2 − 4x3 − 3) − (9x3 + 3x − 8x2). Be sure to show all of your work in a neat and organized fashion.

Use the ^ (shift 6) symbol to show an exponent. For example, x squared can be written as x^2.

Answer 1

(-25x - 64x - 3) - (729x + 3x - 64x) ????

Answer 2

Please help

Answer 3

you need to subtract like terms x^2 minus x^2

Answer 4

so the -5x^2 and -8x^2?

Answer 5

yes, and you get?

Answer 6

add 8 to boith sides and get 3x^2

Answer 7

yes your answer is right but your method is fishy.. any go on :)
i would say -5x^2--8x^2 = -5x^2+8x^2=3x^2

Answer 8

ok

Answer 9

do the same for the rest, and give me your answer :)

Answer 10

-4x^3 and 9x^3

Answer 11

yes and ur answer?

Answer 12

or should the 9 be negative because the minus sign in between the two equations??

Answer 13

well, the 9 is postive but you have to subtract it from 4..

Answer 14

-4x^3-9x^3 is the same as -4x^3-+9x^3

Answer 15

-13x^3?

Answer 16

yes, and the last two terms, do they have partners?

Answer 17

no

Answer 18

lol, correct..not the same terms.. so your answer would be all the stuff together.. i'll give you a start: 3x^2-13x^3and the last two terms without partners

Answer 19

so 3x^2 - 13^3 + 3x - 3?

Answer 20

yes :) well done, by the way.. there is a difference between (5x)^2 and 5x^2.. do you know it?

Answer 21

no

Answer 22

(5x)^2= 5^2x^2=25x^2
5x^2 is just 5x^2 :)
next time you should write your question with the exponents to avoid complications :)

Answer 23

ok thank you for all the help

Answer 24

you are welcome, you are a great learner :)