(p-2)(12g+1).............
А) 2(х^2-1)/3(х^2+2х+1)=
2(х-1)×(х+1)/3(х+1)^2=
2(х-1)/3(х+1)
2х-2/3х+3
б)2(4-4t+t^2)=
2(2-t)×(2+t)=
2(2-t)/3(2+t)=
4-2t/6+3t
в)x^2-16xy^2=
x×(x-16y^2)
<span> x^2 +5xy +x/5y^2+xy+y=
=x^2+5xy+x/5*y^2+xy+y=
=x^2+5xy+xy^2/5+xy+y=
=x^2+6xy+xy^2/5+y</span>
42х⁵ у² 3
-------- * ----------- = ---------------
у⁴ 14х⁵ у²
Решаем по формулам приведения: