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Variable

Which express...

Question

Which expression has more variables ?
(1) $x^{3} + 3 x^{2} + 5 x^{2} y^{2} + 7 y$
(2) $5 x + 3 y + z$

1

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2

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Both have same

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cannot be determined

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Solution

The correct option is A $2$
variables in $(1)$ are $x$ and $y$ where as variables in $(2$ ) are $x, y, z$ .

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Similar questions

\frac{x^{3} - 1}{x^{2} + 2}

\frac{3 x^{2} + 2 x^{2} + 4}{x^{2} + 2}

If x + y + z = xyz. Then

$\frac{3 x - x^{3}}{1 - 3 x^{2}}$ + $\frac{3 y - y^{3}}{1 - 3 y^{2}}$ + $\frac{3 z - z^{3}}{1 - 3 z^{3}}$ =

(x + 1)

x^{3} + x^{2} + x + 1

x^{4} + x^{3} + x^{2} + x + 1

x^{4} + 3 x^{3} + 3 x^{2} + x + 1

x^{3} - x^{2} - (2 + \sqrt{2}) x + \sqrt{2}

x^{3} + x^{2} + x + 1

x^{4} + x^{3} + x^{2} + x + 1

x^{4} + 3 x^{3} + 3 x^{2} + x + 1

x^{3} - x^{2} - (2 + \sqrt{2}) x + \sqrt{2}

x + y + z = x y z

\frac{3 x - x^{3}}{1 - 3 x^{2}} + \frac{3 y - y^{3}}{1 - 3 y^{2}} + \frac{3 z - z^{3}}{1 - 3 z^{2}} = \frac{3 x - x^{3}}{1 - 3 x^{2}} \cdot \frac{3 y - y^{3}}{1 - 3 y^{2}} \cdot \frac{3 z - z^{3}}{1 - 3 z^{2}}

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