Question

What should be added to 1+2x-3x² to
get x²-x-1
​

Answer 1

Answer:

Let's simplify step-by-step.

x2−x−1−1+2x−3x2

=x2+−x+−1+−1+2x+−3x2

Combine Like Terms:

=x2+−x+−1+−1+2x+−3x2

=(x2+−3x2)+(−x+2x)+(−1+−1)

=−2x2+x+−2