Question

if ax^3-3x^2-11x+20is a multiple of x+3 find value of a

Answer 1

Answer:

a = 1

Step-by-step explanation:

x + 3) ax³ - 3x² - 11x + 20 ( x²

          x³  + 3x²

         -       -   ( symbols has changed + has - and - has + we can cancel                                                                                

                                        x cube terms )

the coefficient of x cube is 1