5x^3+7x^2-11x+3=0 求X

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5x^3+7x^2-11x+3=0 求X
5x^3+7x^2-11x+3=0 求X

5x^3+7x^2-11x+3=0 求X
5x^3+7x^2-11x+3
=（5x-3）(x^2+2x -1)
x1= 3/5
x2 = - 根号2 -1
x2 = 根号2 -1

3 4 -5 7
2 -3 3 -2
4 11 -13 16
7 -2 1 3
= 1 7 -8 9 = 1 7-8 = 9 1 7 -8 9 = 1 7 -8 9 = 1 24 0 0
2 -3 3 -2 0 -17 19 -20 0 -17 19 -20 0 -17 -8 9 0 -17 -8 - 9
4 11 -13 1...

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3 4 -5 7
2 -3 3 -2
4 11 -13 16
7 -2 1 3
= 1 7 -8 9 = 1 7-8 = 9 1 7 -8 9 = 1 7 -8 9 = 1 24 0 0
2 -3 3 -2 0 -17 19 -20 0 -17 19 -20 0 -17 -8 9 0 -17 -8 - 9
4 11 -13 16 0 -17 19 -20 0 -17 19 -20 0 0 0 0 0 0 0 0
7 -2 1 3 0 -51 57 -60 0 0 0 0 0 0 0 0 0 0 0 0
即X1 24×2 = 0因此，X1 =-24X2令，X3 = C1，使得X1 =（192/17）C1-（216/17）C2
-17X2-8X3 +9×4 = 0×2 = - （8/17）×3 +（9/17）×4×4 = C2 X2 =（-8/17）C1 +（9/17），C2
X3 = C1
4 = C2
为此解决方案p>

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