Question 280350
Subtract: 
(0.05x^3-0.05x^2+0.03x) - (0.02x^3+0.01x^2-7)= 
Remove the parentheses:
0.05x^3 - 0.05x^2 + 0.03x - 0.02x^2 - 0.01x^2 + 7
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Combine "like" terms:
0.05x^3 - 0.07x^2 + 0.02x^2 + 7
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Cheers,
Stan H.