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c) 3- (x² - 2y) - (3x²+2)
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Step-by-step explanation:

To simplify the expression \(3 - (x^2 - 2y) - (3x^2 + 2)\), follow these steps:

1. Distribute the negative signs inside the parentheses:

\[

3 - (x^2 - 2y) - (3x^2 + 2) = 3 - x^2 + 2y - 3x^2 - 2

\]

2. Combine like terms:

- Combine constants: \(3 - 2 = 1\)

- Combine \(x^2\) terms: \(-x^2 - 3x^2 = -4x^2\)

So, the simplified expression is:

\[

-4x^2 + 2y + 1

\]

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