SOLUTION: perform the indicated operations on the expression (5a^3+3a-2)-(4a^3+a^2+5) a. a^3+a^2+3 b. a^3-a^2+3a-7 c. 20a^3+3a^2-10 d. 3a^6-7 If you could please explain I would rea

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: perform the indicated operations on the expression (5a^3+3a-2)-(4a^3+a^2+5) a. a^3+a^2+3 b. a^3-a^2+3a-7 c. 20a^3+3a^2-10 d. 3a^6-7 If you could please explain I would rea      Log On


   

Question 631478: perform the indicated operations on the expression
(5a^3+3a-2)-(4a^3+a^2+5)
a. a^3+a^2+3
b. a^3-a^2+3a-7
c. 20a^3+3a^2-10
d. 3a^6-7
If you could please explain I would really appreciate it
Found 2 solutions by jim_thompson5910, ewatrrr:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%285a%5E3%2B3a-2%29-%284a%5E3%2Ba%5E2%2B5%29 Start with the given expression.


5a%5E3%2B3a-2-4a%5E3-a%5E2-5 Distribute


%285a%5E3-4a%5E3%29%2B%28-a%5E2%29%2B%283a%29%2B%28-2-5%29 Group like terms


a%5E3-a%5E2%2B3a-7 Combine like terms


So the answer is a%5E3-a%5E2%2B3a-7, which is choice B

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Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

 5a^3+3a-2

-4(a^3+a^2+5)

  5a^3       +3a  -2

-4a^3  -a^2    -5)  ||Combine Like terms

  a^3  - a^2 + 3a - 7