Answer
The answer is 9x² - 2x - 1
Explanation
The question wants us to simplify the given expression by summing the terms
5x² + 6x - 3 + 4x² - 8x + 2
To do this sum, we bring the terms that are similar together and sum them. The expression then becomes
5x² + 4x² + 6x - 8x - 3 + 2
= 9x² - 2x - 1
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