Question

Find all the zeros of the polynomial 2x cube - x square - 5 x minus 2 if two of its zeros are minus 1 and 2

Answer 1

Answer:

Step-by-step explanation:

Answer:

P(x)= 2x³ - x² - 5x-2

      Roots = (x+1 ) and (x-2)

Divide p(X) by (x+1)

x+1 ) 2x³- x² -5x - 2 ( 2x² -3x -1

      - 2x³ ± 2x²

          -3x² - 5x

           3x² + 3x

                  -2x - 2

                    2x + 2

                          0

We will get an equation = 2x²-3x - 2

After solving this we will get its another root = (2x + 1 )