Исходное не пишу
(5²)³=1/5⁶
5⁶/5⁶=1
2√2*5√3*<span>√6 - перемножаем корни и целые числа
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(512⁹)⁴:(64⁹)⁶=((8³)⁹)⁴):((8²)⁹)⁶)=8¹⁰⁸:8¹⁰⁸=1
1)y/(2+3y)-5y)/(3y-2)=(3y²-2y-10y-15y²)/(2+3y)(3y-2)=
=(-12y²-12y)/(2+3y)(3y-2)=-12y(y+1)/(2+3y)(3y-2)
2)-12y(y+1)/(2+3y)(3y-2) * (3y-2)²/4y²(y+1)=-3(3y-2)/y(2+3y)=
=3(2-3y)/y(2+3y)
Для x=-2 y=1 3x+8y=2
для x=1 y=-2 5x-y=7