1. 1) -3a²·b⁴·3a²·b⁶ = -9a⁴·b¹⁰
2) (-4a²b⁶)³ = -64a⁶b¹⁸
2. (5x²+6x-3)-(2x²-3x-4) = 5x²+6x-3 - 2x² + 3x + 4 = 3x² + 9x + 1
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Answers & Comments
1. 1) -3a²·b⁴·3a²·b⁶ = -9a⁴·b¹⁰
2) (-4a²b⁶)³ = -64a⁶b¹⁸
2. (5x²+6x-3)-(2x²-3x-4) = 5x²+6x-3 - 2x² + 3x + 4 = 3x² + 9x + 1