CPM Homework Help : INT3 Problem 4-129

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4-129.

Solve each equation.

$1234x+23456=987654$
Answer (a):
$x\approx781.36$

$\frac{10}{x}+\frac{20}{x}=5$
Hint (b):
Multiply both sides of the equation by $x$ .

$5x^2-6x+1=0$
Hint (c):
Factor and use the Zero Product Property.

$x^3-3x^2+2x=0$
Hint (d):
$x$ is a common factor. How many solutions do you expect from a cubic equation?

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