Find the zeros of f(x) = 9x4

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Find the zeros of f(x) = 9x4 - 37x2 + 4.

f(x) = 9x^4 - 37x^2 + 4; 0 = (3x - 1) (3x + 1) (x - 2) (x + 2); 3x - 1 = 0; 3x = 1; x = 1/3; 3x + 1 = 0; 3x = -1; x = -1/3; x - 2 = 0; x = 2; x + 2 = 0; x = -2 The zeroes are -2, -1/3, 1/3, 2

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Asked 1/10/2013 11:52:10 AM

Updated 10/20/2014 4:28:43 PM

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andrewpallarca

f(x) = 9x^4 - 37x^2 + 4;
0 = (3x - 1) (3x + 1) (x - 2) (x + 2);
3x - 1 = 0; 3x = 1; x = 1/3;
3x + 1 = 0; 3x = -1; x = -1/3;
x - 2 = 0; x = 2;
x + 2 = 0; x = -2

The zeroes are -2, -1/3, 1/3, 2

Added 10/20/2014 4:28:43 PM

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