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math

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The foci and vertice of 2x^2+5y^2+8x+10y+3=0

  • math - ,

    let's complete the square

    2(x^2 + 4x + ....) + 5(y^2 + 2y + ...) = -3
    2(x^2 + 4x + 4) + 5(y^2 + 2y + 1) = -3 + 8 + 5
    2(x+2)^2 + 5(y+1)^2 = 10
    divide by 10

    (x+2)^2/5 + (y+1)^2/2 = 1

    can you take it from there?

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