1) (x + 3)² - (x - 2)(x + 2) = x² + 6x + 9 - x² + 4 = 6x + 13
2) - 1/2a³b * (- a²b⁴) * 4b³a = 2a³⁺²⁺¹ b¹⁺⁴⁺³ = 2a⁶b⁸
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1) (x + 3)² - (x - 2)(x + 2) = x² + 6x + 9 - x² + 4 = 6x + 13
2) - 1/2a³b * (- a²b⁴) * 4b³a = 2a³⁺²⁺¹ b¹⁺⁴⁺³ = 2a⁶b⁸