= 44y/2/-(9x/2/-6xy+y/2/) = 44y/2/-9x/2/+6xy-y/2/=43y/2/-9x/2/+6xy
1). (-10/3a^2b^6)^2=100/9 a^4b^12; 2). 5^6*25^2 / 125^3=5^6*(5^2)^2 / (5^3)^3=5^6*5^4 / 5^9=5^10 / 5^9=5; 3). (a^m+1)^2:(a^m-1)^2=a^(2m+2-2m+2)=a^4; 4). a^18: (a^3)^5*a^0=a^18:a^15=a^3; 5).a^5n+3: (a^n)^4=a^5n+3:a^4n=a^(5n+3-4n)=a^n+3. ^ -это степень.
4³*10¯⁵<span>/25¯²=0,1
</span>4³*10¯⁵/25¯²=(2²)³*(2*5)⁻⁵ / (5²)⁻² = 2⁶* 2⁻⁵*5⁻⁵ * 5⁴ = 2*5⁻¹=2/5 = 0.4
0.4≠0.1
a^2-b^2/2ab /(1/a-1/b) при a=4/3 и b=7/3