Question

Se C(X)=-X²+8x-3 E D(x)=5x³+4x²-3x-1,qual o valor de D(x)-C(x)?

Answer 1

D(x) - C(x)
5x³ +4x² -3x -1 -(-x²+8x-3)
5x³ +4x² -3x -1 +x² -8x +3
5x³ +x² +4x² -3x -8x -1 +3
5x³ +5x² -11x +2
5x(x²+x) -11x +2

Answer 2

  5x³ + 4x² - 3x - 1 - ( x² + 8x - 3 )
 
 5x ³+ 4x² - 3x - 1 - x² - 8x + 3
  
5x ³ + 4x² - x² - 3x - 8x - 1 + 3
   
     5x ³ + 3x² - 11 x + 2