solve: X^3+30=X?

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2007-08-20 10:26:17 · 2 answers · asked by Beau B 1 in Science & Mathematics ➔ Mathematics

2 answers

Very simply, any odd root (including the cube root) of a negative number is a negative number equal to minus (cube root of the positive number of the same magnitude). So
x^3 = -30
x = -(30^(1/3)) = -3.10723251

2007-08-20 11:30:09 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋

Please, go here:
http://eom.springer.de/C/c020350.htm

2007-08-20 17:39:03 · answer #2 · answered by Alexander 6 · 0⤊ 0⤋