Answer:
![\large\boxed{-3^2-(-5^2)-(15-33)=34}](https://img.qammunity.org/2020/formulas/mathematics/college/oymynpb81fhyl806gj02zh5ix1e57gxivf.png)
Explanation:
Use PEMDAS:
P Parentheses first
E Exponents (ie Powers and Square Roots, etc.)
MD Multiplication and Division (left-to-right)
AS Addition and Subtraction (left-to-right)
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![-3^2-(-5^2)-(15-33)\\\\=-9-(-25)-(-18)\\\\=-9+25+18\\\\=34](https://img.qammunity.org/2020/formulas/mathematics/college/fbc5lksw41tch5z6rpgvn636pt8mbfwlsz.png)