Y=4-x² y=2-x S-?
4-x²=2-x
x²-x-2=0 D=9 √D=3
x₁=-1 x₂=2
S=₋₁²(4-x²-2+x)dx=₋₁²(2+x-x²)dx=(2x+x²/2-x³/3) ₋₁|²=
=2*2+2²/2+2³/3-(2*(-1)+(-1)²/2-(-1)³/3)=4+2-8/3-(-2+1/2+1/3)=6-8/3-(-1,5+1/3)=
=6-8/3+1,5-1/3=7,5-3=4,5.
Ответ: S=4,5 кв. ед.
3^(-8)*(3^5)^2 = 3^(-8)*3^(5*2) = 3^(-8)*3^10 = 3^(-8+10) = 3^2 = 9