1) (c² - 6)(c² + 6)(36 + c⁴) = (36 - c⁴)(36 + c⁴) = 36² - c⁸ = 1296 - c⁸
2) (x² - y²)(x² + y²)(x⁴ + y⁴) = (x⁴ - y⁴)(x⁴ + y⁴) = x⁸ - y⁸
1) (c² - 6)(c² + 6)(36 + c⁴) = (36 - c⁴)(36 + c⁴) = 36² - c⁸ = 1296 - c⁸
2) (x² - y²)(x² + y²)(x⁴ + y⁴) = (x⁴ - y⁴)(x⁴ + y⁴) = x⁸ - y⁸