dijawab y,pkai cranya # matematika minat kls 10

[tex] \frac{y^{-1} + xy^{-2}}{1-x^2y^{-2}} \\
= \frac{ \frac{1}{y} + \frac{x}{y^2}}{ \frac{y^2}{y^2} - \frac{x^2}{y^2}} \\
= \frac{ \frac{y + x}{y^2}}{ \frac{y^2 - x^2}{y^2}} \\
= \frac{y + x}{y^2 - x^2}
= \frac{y + x}{(y + x)(y - x)} \\
= \frac{1}{y - x} [/tex]

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