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(a + b)^2 Expansion and Visualisation

If x + y = ...

Question

If $x + y = 5$ and $x^{2} + y^{2} = 13$ , then xy is __________.

A

-b

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B

6

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C

-5

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D

5

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Solution

The correct option is B 6

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Similar questions

x^{y} = y^{x},

(\frac{x}{y})^{\frac{x}{y}}

is equal to:

b) If

\frac{x}{y} = \frac{6}{5}

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

x + y = 3, x y = 5

, then find the value of

x^{2} + y^{2}

x + y = 3

x^{2} + y^{2} = 5

, then find xy.

x^{2} + y^{2} - x y = 3

y - x = 1

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

x^{y} = y^{x},

(\frac{x}{y})^{\frac{x}{y}}

is equal to:

b) If

\frac{x}{y} = \frac{6}{5}

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

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