If 1/a + 1/b + 1/c = 1 and abc = 2, Find ab²c² + a²bc² + a²b²c

If 1/a + 1/b + 1/c = 1 and abc = 2, Find ab²c² + a²bc² + a²b²c

If \[ \frac{1}{a}+\frac{1}{b}+\frac{1}{c}=1 \] and \[ abc=2, \] then find \[ ab^2c^2+a^2bc^2+a^2b^2c. \]

Solution

Given:

\[ \frac{1}{a}+\frac{1}{b}+\frac{1}{c}=1 \]

Multiplying both sides by \(abc\):

\[ bc+ca+ab=abc \]

Given:

\[ abc=2 \]

Therefore,

\[ ab+bc+ca=2 \]

Now,

\[ ab^2c^2+a^2bc^2+a^2b^2c \]

Taking \(abc\) common:

\[ =abc(ab+bc+ca) \]

Substituting the values:

\[ =2\times2 \]

\[ =4 \]

Therefore,

\[ \boxed{4} \]

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