ответ:5х^4-45x^2-15
x^2
Объяснение:
(x+9/x)+5x-15/x^2=
=x^2+9/x*5x-15/x^2=
=(x^2+9)*5-15/x^2=
=5x^2+45-15/x^2=
=5x^4-45^2-15
ответ:5х^4-45x^2-15
x^2
Объяснение:
(x+9/x)+5x-15/x^2=
=x^2+9/x*5x-15/x^2=
=(x^2+9)*5-15/x^2=
=5x^2+45-15/x^2=
=5x^4-45^2-15
x^2