Answers

2015-03-28T13:07:47+08:00

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
\bold{Given\ Equation:} \\ \\ 2x^3-5\div x+2\implies \bold{\frac{2x^3-5}{x+2}} \\ \\ \bold{Solution:} \\ \\ \frac{2x^3-5}{x+2} \ \ \ \ \ \ |\ ^{follow\ the\ rules\ of\ dividing\ fractions} \\ \\ \bold{So\ the\ final\ answer\ is...} \\ \\ \boxed{\bold{2x^2-3}} \\ \\ Hope\ it\ Helps :) \\ Domini
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I think that's not the answer. If the equation is really 2x^3 - 5 all over x + 2, then that means: 2x ^ 3 - 5 / x + 2 = answer and: ( answer ) (x + 2) = 2x ^ 3 - 5.
I think that's not the answer. If the equation is really 2x^3 - 5 all over x + 2, then that means: 2x ^ 3 - 5 / x + 2 = answer and: ( answer ) (x + 2) = 2x ^ 3 - 5. The answer enclosed by a box was 2x^2 - 3, so it should be that: ( 2x^2 - 3) ( x + 2 ) = 2x ^3 - 5, but if you are going to try multiplying ( 2x^2 - 3) times ( x + 2 ), it is unequal to 2x^3 - 5
I think that's not the answer. If the equation is really 2x^3 - 5 all over x + 2, then that means: 2x ^ 3 - 5 / x + 2 = answer and: ( answer ) (x + 2) = 2x ^ 3 - 5. The answer enclosed by a box was 2x^2 - 3, so it should be that: ( 2x^2 - 3) ( x + 2 ) = 2x ^3 - 5, but if you are going to try multiplying ( 2x^2 - 3) times ( x + 2 ), it is unequal to 2x^3 - 5.
Check it out.
2015-03-29T11:02:32+08:00

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

Given equation:
                                 \frac{2x^{3}-5}{x+2}


Solution:

                                        2x²   - 4x + 8         

                   x    +   2     |   2x³                  -  5

                                         2x³ + 4x²              

                                                 -4x²         - 5

                                                 -4x²  - 8x      

                                                           8x - 5

                                                                 16

                                                                -21

Answer: 

2x² - 4x + 8 with a remainder of -21 or 2x² - 4x + 8 +  \frac{-21}{x+2}


Check:

                ( x + 2 ) ( 2x² - 4x + 8 ) =   2x³ + 16

There is a remainder which is  -21.

            2x³ + 16 + -21 =  2x³ - 5, CORRECT


Final answer:

                      2x² - 4x + 8 +  \frac{-21}{x+2}

                                           

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