1. an exact solution requires a radical solution - no decimal approximation.2. (a)4x^3 = 756x^3 = 756/4 = 189x = cube root of 189 = 5.74 to nearest hundredth answer(b) 189 = 3*3*3*7 so we can write the cube root of 189 as 3∛7 answerchecking (a) 4*(5.74^3 = 756.48 which is very close(b) 4* ((3∛3)^3 = 4*189 = 756 - spot on! 3. i would use solution b because the original question asked for an exact solution.
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