Question

determine o valor de K qur torne a fração x+y/x^2+ky^2 igual a 1/x-y

Answer 1

Ola Lariza

(x + y)/(x² + ky²) = 1/(x - y)

(x + y)*(x - y) = x² + ky²

x² - y² = x² + ky²

k = -1

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