Question

What must be added to 1 – x + x² – 2x³ to obtain x³?

(a) x³ – x² + x – 1. (b) – 1 + x + x² – 3x³. (c) 3x³ – x² + x – 1.​

Answer 1

Answer:

I hope you have understand

Answer 2

Answer:

x³-1-x+x²-2x³

x³-1-x+x²