Log 1/3 x+log 1/3 y=2 log 1/3 x+log 1/3 y=4

1)   log 1/3 x + log 1/3 y=2

log  1/3 xy = 2

xy = 1/9

log 1/3  1/3  + log 1/3  1/3=2

1+1=2

2)    log 1/3 x+log 1/3 y=4 

log  1/3 xy = 4

xy=1/81

  log 1/3 1/9+log 1/3  1/9=4 

2+2=4

a+(a+d)+a+2d)=0

a+(a+d)+(a+2d)+(a+3d)=1

3a+3d=0

4a+6d=1

a=(1-6d)/4

3(1-6d)/4+3d=0

6d=3

d=1/2

a=(1-6d)/4=(1-3)/4=-1/2

s=(2a+d(n-1)/2)*n=(2*(-1/2)+(1/2)(10-1))/2*10=17,5

4х⁴ * (-2х²)³ = 4х⁴ * (-8х⁶) = -32х¹⁰