x=[2³⁰^²x(2⁶)¹⁰⁰*2+(64⁴)¹⁰⁰:2⁸⁹⁹]^2+2³⁰⁰⁷=
=(2⁹⁰⁰*2⁶⁰⁰*2+2²⁴⁰⁰:2⁸⁹⁹)²+2³⁰⁰⁷=
=(2¹⁵⁰¹+2¹⁵⁰¹)²+2³⁰⁰⁷=
=(2*2¹⁵⁰¹)²+2³⁰⁰⁷=
=2¹⁵⁰²*²+2³⁰⁰⁷=
=2³⁰⁰⁴+2³⁰⁰⁷=
=2³⁰⁰⁴(1+2³)=
=2³⁰⁰⁴*9=2¹⁵⁰²*² * 3²=
=(2¹⁵⁰²*3)²
y=5*(3²⁰⁰²-3²⁰⁰¹-9¹⁰⁰⁰)=
=5*(3²⁰⁰²-3²⁰⁰¹-3²⁰⁰⁰)=
=5*3²⁰⁰⁰(3²-3-1)=
=5*3²⁰⁰⁰*5=5²*3¹⁰⁰⁰*²=
=(5*3¹⁰⁰⁰)²
b) (4³¹+6*32¹²-5*16¹⁵):(8²¹-5*8²⁰)-1=
=(2⁶²+3*2*2⁵*¹²-5*2⁴*¹⁵):(2³*²¹-5*2³*²⁰)-1=
=(2⁶²+3*2⁶¹-5*2⁶⁰):(2⁶³-5*2⁶⁰)-1=
=2⁶⁰(2²+6-5):2⁶⁰(2³-5)-1=
=5:3-1=5/3-3/3=2/3