IDNStudy.com, ang iyong mapagkukunan para sa mabilis at eksaktong mga sagot. Alamin ang mga detalyadong sagot mula sa mga bihasang miyembro ng aming komunidad na sumasaklaw sa iba't ibang paksa para sa lahat ng iyong pangangailangan.

What is the answer of this problem
2x^3-5÷x+2?


Sagot :

[tex]\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 [/tex]

Given equation:
                                [tex] \frac{2x^{3}-5}{x+2} [/tex]


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 + [tex] \frac{-21}{x+2} [/tex]


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 + [tex] \frac{-21}{x+2} [/tex]