Math, asked by himanshi2046, 3 months ago

what should be added to 12x^2 +3x-2to obtain 3x^2+9x+5 pls give mine ans​

Answers

Answered by rajashreemithu
0

x² + x -6 ) x³ - 3x² -12x  + 19 ( x -4

               x³ + x² -6x

   --------------------------------

             -4x² -6x + 19  

             -4x²-4x + 24  

-------------------------------------

                  -2x - 5  

hence ,

  x³ - 3x² -12x + 19 = (x² +x - 6)(x - 4) -(2x + 5)

   x³ - 3x² -12x + 19  + (2x + 5)   = (x² + x - 6)(x - 4)

hence if we add (2x + 5)  

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