Use the x-intercept method to find all real solutions of the equation.
x3 - 10x2 + 29x - 20 = 0
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x3-20+29x=20
x3+9x=20
12x=20
x=20/12
x=5/3.
x3+9x=20
12x=20
x=20/12
x=5/3.
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