-x^2 + 2 - 0.3x + 7x + x^2 - 0.2x = 0
Combine like terms:
-x^2 + x^2 - 0.3x + 7x - 0.2x + 2 = 0
6.5x + 2 = 0
6.5x = -2
x = -2/6.5
x = -0.3077