ркшите плз 30 баллов даю
[tex]( {x}^{2} - {y}^{ - 1} ) {}^{2} + 2 {x}^{2} \times {y}^{ - 1} [/tex]
[tex]( {x}^{2} - {y}^{ - 1} ) {}^{2} + 2 {x}^{2} \times {y}^{ - 1} [/tex]
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Ответ:
x^4y^2+1/y^2
Объяснение:
(x^2-y^-1)^2+2x^2*y^-1=
(x^2-1/y)^2+2x^2*1/y=
(x^2y-1/y)^2+2x^2/y=
(x^2y-1)/y^2+2x^2/y=
x^4y^2-2x^2y+1/y^2+2x^2/y=
x^4y^2-2x^2y+1+2x^2*y/y^2=
x^4y^2+1/y^2