Question

What should be added to 2xcube+6xsquare-5x+8 to get 3xcube -xsquare+2x+1?​

Answer 1

Step-by-step explanation:

Let x be added to get your answer

2x^3+6x^2-5x+8 +x = 3x^3-x^2+2x+1

x= 3x^3-x^2+2x+1 - (2x^3+6x^2-5x+8)

x= x^3 -7x^2 -3x -7