If - 4x2-3y2 - 2x2-5y2 -12-19- then x-y is

The correct option is C 3:2 4x^2 3y^22x^2+5y^2=1219 19(4x^2 3y^2)=12(2x^2+5y^2) ⟹52x^2=117y^2 ⟹ 4x^2=9y^2 ⟹x^2y^2=94 ⟹xy=32 ...

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Ratio and Proportion

If [ 4x2-3y...

Question

If $(\begin{matrix} 4 x^{2} - 3 y^{2} \end{matrix}) : (\begin{matrix} 2 x^{2} + 5 y^{2} \end{matrix}) = 12 : 19$ , then $x : y$ is

2 : 3

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1 : 2

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3 : 2

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1 : 4

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Similar questions

({3 x}^{2} - {3 y}^{2}) : ({2 x}^{2} + {5 y}^{2}) = 12 : 19

(x : y)

x

y

(2 x^{2} - 5 y^{2}) : x y = 1 : 3

x : y

l_{1}

2 x^{2} + 3 y^{2} = 35

(4, - 1)

l_{2}

4 x^{2} + y^{2} = 25

(2, - 3),

l_{1}

l_{2}

l_{1}

2 x^{2} + 3 y^{2} = 35

(4, - 1)

l_{2}

4 x^{2} + y^{2} = 25

(2, - 3)

l_{1}

l_{2}

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