simplify 2x(x to the 2nd power plus 3y)plus x plus y
If my interpretation is correct: 2(x² + 3y) + x + y = 2x² + 6y + x + y = 2x² + x + 7y
Or, possibly: 2x(x² + 3y) + x + y = 2x^3 + 6xy + x + y