Question

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

Answer 1

Answer:

Given;

What should be added to 1+2x-3x^{2}1+2x−3x

2

to get x^{2} -x-1x

2

−x−1

Let,

If we add aa with 1+2x-3x^{2}1+2x−3x

2

then get x^{2} -x-1x

2

−x−1

∴a+1+2x-3x^{2}=x^{2} -x-1a+1+2x−3x

2

=x

2

−x−1

⇒a=x^{2} -x-1-1-2x+3x^{2}a=x

2

−x−1−1−2x+3x

2

⇒a=4x^{2} -3x-2a=4x

2

−3x−2

∴ If we add 4x^{2} -3x-24x

2

−3x−2 with 1+2x-3x^{2}1+2x−3x

2

then get x^{2} -x-1x

2

−x−1

Answer 2

Step-by-step explanation:

This is the correct answer which is above mentioned