Answer:
-4x² + 9y² + 32x + 36y - 64 = 0
4x² - 9y² - 32x - 36y + 64 = 0
4x² - 32x - (9y² + 36y) = -64
4(x² - 8x + 16) - 9(y² + 4y + 4) = -36
4(x - 4)² - 9(y + 2)² = -36
9(y + 2)² - 4(x - 4)² = 36
(y + 2)²/4 - (x - 4)²/9 = 1
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