Question

42 срочно с обьяснением !

Answer 1

1
x^4*(x²+1)/x²(x²+1)=x²
2
-y^6*(y²-1)/y²(y²-1)=-y^4
3
-b^7*(b³-1)/b²(b³-1)=-b^5
4
c^4(c-1)(c+1)/c²(c-1)=c²(c+1)=c³+c²