If 9x²+ 25y² = 181 and xy = −6, find the value of 3x + 5y.

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Solution

In the given problem, we have to find

We have been given and

Let us take

We shall use the identity

By substituting and we get,

Hence the value of is.

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Similar questions

If ${9 x}^{2} + {25 y}^{2} = 181$ and xy = - 6. Find the value of 3x + 5y.

3 x + 5 y = 11

x y = 2

9 x^{2} + 25 y^{2}

9 x^{2} + 25 y^{2} = 181 a n d x y = - 6

9 x^{2} + 4 y^{2}

Multiply 9x²+25y²+15xy+12x-20y+16 by 3x-5y-4 using suitable identity

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