Question

What should be added to x²+5x-6 to get x²-2x²+4x-5​

Answer 1

Answer:

-2x² -x +1

Step-by-step explanation:

let y should be added then

y +  x²+5x-6 = x²-2x²+4x-5

y =x²-2x²+4x-5- (x²+5x-6)

y = x²- 2x² + 4x -5​ - x²- 5x + 6

y = -2x² -x +1