SummerJade SummerJade

31-01-2016
Mathematics

contestada

Find all real and imaginary zeros of 64x^3+216=0

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Panoyin Panoyin

31-01-2016

64x³ + 216 = 0
8(8x³) + 8(27) = 0
8(8x³ + 27) = 0
8 8
8x³ + 27 = 0
- 27 - 27
8x³ = -27
8 8
x³ = -3³/₈
x = -1¹/₂

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