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Addition and Subtraction of Algebraic Expression

If x = 1, y...

Question

If $x = 1, y = 2$ and $z = 5$ , find the value of $x^{2} + y^{2} + z^{2}$ .

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Solution

11+22+5*5
1+4+25
30

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Similar questions

x - y + z = 5

x^{2} + y^{2} + z^{2} = 49

, find the value of :

z x - x y - y z

x^{2} = y + z, y^{2} = z + x, z^{2} = x + y

, then the value of

\frac{1}{x + 1} + \frac{1}{y + 1} + \frac{1}{z + 1}

\frac{1}{x + 1} + \frac{2}{y + z} + \frac{2006}{2006} = 1

, find the value of

\frac{x^{2}}{x^{2} + x} + \frac{y^{2}}{y^{2} + y} + \frac{z^{2}}{z^{2} + 2006 z}

x, y, z

satisfies the equations

x + log (x + \sqrt{x^{2} + 1}) = y

y + log (y + \sqrt{y^{2} + 1}) = z

z + log (z + \sqrt{z^{2} + 1}) = x

, then find the value of

{(1 - x)}^{2} + {(1 - y)}^{2} + {(1 - z)}^{2}

x + y + z = 0

then what is the value of

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

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