If -a-2-ab-b-2- - 39 and -a-b- - 3- then the value of -a-3-b-3- is -111117171187

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If (a^2+ab+b^...

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If $(a^{2} + a b + b^{2}) = 39$ and $(a - b) = 3$ , then the value of $(a^{3} - b^{3})$ is :

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If a + b + c = 9, and $a^{2} + b^{2} + c^{2} = 35$ , find the value of $a^{3} + b^{3} + c^{3} - 3 a b c .$

(a^{2} + a b + b^{2}) = 39

(a - b) = 3

(a^{3} - b^{3})

If $a^{3} + b^{3} = 27$ and $a^{2} + b^{2} - a b = 9$ , then $a + b =$ ___

If (a^{3} + b^{3}) = 243 and (a + b) = 9, then the value of (a^{2} - a b + b^{2}) is

x = 1 + a + a^{2} + a^{3} + . . . .

\infty (| a | < 1)

y = 1 + b + b^{2} + b^{3} + . . .

\infty (| b | < 1)

1 + a b + a^{2} b^{2} + a^{3} b^{3} + . . .

\infty = \frac{x y}{x + y - 1}

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