Let's expand the given expression:
x2−2xx²-2xx2−2x² + 3x2−2xx²-2xx2−2x - 4= x2−2xx^2 - 2xx2−2xx2−2xx^2 - 2xx2−2x + 3x2−2xx^2 - 2xx2−2x - 4= x4−2x3−2x3+4x2x^4 - 2x^3 - 2x^3 + 4x^2x4−2x3−2x3+4x2 + 3x^2 - 6x - 4= x^4 - 4x^3 + 4x^2 + 3x^2 - 6x - 4= x^4 - 4x^3 + 7x^2 - 6x - 4
So, the simplified expression is x^4 - 4x^3 + 7x^2 - 6x - 4.
Let's expand the given expression:
x2−2xx²-2xx2−2x² + 3x2−2xx²-2xx2−2x - 4
= x2−2xx^2 - 2xx2−2xx2−2xx^2 - 2xx2−2x + 3x2−2xx^2 - 2xx2−2x - 4
= x4−2x3−2x3+4x2x^4 - 2x^3 - 2x^3 + 4x^2x4−2x3−2x3+4x2 + 3x^2 - 6x - 4
= x^4 - 4x^3 + 4x^2 + 3x^2 - 6x - 4
= x^4 - 4x^3 + 7x^2 - 6x - 4
So, the simplified expression is x^4 - 4x^3 + 7x^2 - 6x - 4.