Simplify $3 x^{2} + 5 x y - 4 y^{2} + x^{2} - 8 x y - 5 y^{2}$

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Solution

$3 x^{2} + 5 x y - 4 y^{2} + x^{2} - 8 x y - 5 y^{2}$
$= 3 x^{2} + x^{2} - 4 y^{2} - 5 y^{2} + 5 x y - 8 x y$
$= 4 x^{2} - 9 y^{2} - 4 x y$

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Similar questions

3 x^{2} + 5 x y - 4 y^{2} + x^{2} - 8 x y - 5 y^{2}

4 x^{2} - 3 x y - 9 y^{2}

(4 x^{2} - 7 x y + 4 y^{2} - 3), (5 + 6 y^{2} - 8 x y + x^{2})

(6 - 2 x y + 2 x^{2} - 5 y^{2})

Find the equation of the bisectors of the angle between the lines represented by $3 x^{2} - 5 x y + 4 y^{2} = 0$

3 x^{2} - 8 x y + 5 y^{2} = 0

P = 7 x^{2} + 5 x y - 9 y^{2}, Q = 4 y^{2} - 3 x^{2}

R = 4 x^{2} + x y + 5 y^{2}

P + Q + R = 8 x^{2} + 6 x y

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