Find the difference of (−4x2 − 7x3 − 2) − (8x3 + 3x − 7x2). 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.

Question

Find the difference of (−4x2 − 7x3 − 2) − (8x3 + 3x − 7x2). 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.

ivettef365 · Answer

so you have
-4x^2 -7x^3 -2 -8x^3 -3x +7x^2  now combine like terms

anonymous · Answer

hm

anonymous · Answer

I kinda need help with that ^^" Sorry think u could explain the method for me to find my answer?

ivettef365 · Answer

combine like terms so you can combine -7x^3 - 8x^3 = -15x^3
combine -4x^2 + 7x^2 = 3x^2
all other terms are different, so you have

-15x^3 + 3x^2 -3x -2

anonymous · Answer

so how did u get that answer @ivetef365?

ivettef365 · Answer

What part you don't understand ??

ivettef365 · Answer

first I got out of the parenthesis, then I combined liked terms

anonymous · Answer

well how u combined it

ivettef365 · Answer

just add the numbers, you have

-7x^3 -8x^3, so -7 -8 = -15, so it is -15x^3
same with

-4x^2 + 7x^2 that is the same as 7-4 = 3 so it is 3x^2, when adding numbers with variables, just add the numbers the variable stays the same

anonymous · Answer

oh okay i think i got it now

anonymous · Answer

could u give me an example ?

ivettef365 · Answer

ok :)

anonymous · Answer

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