Fill in the blanks to make the equation true.
___ + ___ = ___
x^4 - 2x^3 + 3x
x^4 + 3x + 1
x^8 + x^3 - 7x^2 + 5x
x^7 - 2x^5 + x^2 + 3x
x^6 + x + 1
x^4 - x^3 + 3x
The answer is x^4 + 3x + 1, x^6 + x + 1, and x^4 - x^3 + 3x.
+310 
