Question

Помогите срочно надо

Answer 1

1
(1-3i)(1+3i)=1-9i²=1+9=10
2
i^10=(i²)^5=(-1)^5=-1
3
i^42=(i²)^21=(-1)^21=-1
4
y`=3x²-3
5
y=x√x-3/√x
y`=3/2*√x+3/2√x³
6
$\int\limits^2_1 {x^2} \, dx =x^3/3|^2_1=8/3-1/3=7/3$