Question

Simplify (6x2 - 3 - 5x3) - (4x3 + 2x2 - 8).

9x3 - 4x2 - 5

-9x3 + 4x2 + 5

x3 - x2 - 13x3

-x3 + x2 + 13x3

Answer 1

Okay, this time you have the negative symbol.
When you have the negative symbol in front of parantheses.
You distribute the -1.
\[\large 6x^2 - 3 - 5x^3 - (4x^3 + 2x^2 - 8)\]
so it then becomes:
\[\large 6x^2 - 3 - 5x^3 - 4x^3 - 2x^2 + 8\]
Take the like terms and simplify, give it a try.

Answer 2

the first thing you shouls do is distribute the - sig to everything behind it.

Answer 3

@eviI hhah I waas about to say that!! Smarty pants!

Answer 4

Remember the like terms are the ones with the same power.
so add the cubes, the squares, and the constants with themselves, follow the last explanation i gave as a guideline.

Answer 5

i got 1x^3 and 4x^2

Answer 6

\[\large -5x^3 - 4x^3 + 6x^2 - 2x^2 + 8 -3\]
Not quite right, try again :) (you got the 4x^2 part spot on so nice job on that !)

Answer 7

9x^3

Answer 8

Remember it is a -5x^3 not a positive, so you'll get a negative number.

Answer 9

Correct number, wrong sign.
it's a negative -9x^3, but good effort

Answer 10

so we have:
\[\large -9x^3 + 4x^2 + 8 - 3\]
only one last step!

Answer 11

8-3=5

Answer 12

right you are!
so now we have
\[\large -9x^3 + 4x^2 + 5\]

Answer 13

is that it

Answer 14

yes

Answer 15

do you mind helping me with more