Verified answer

5x³= 0,5³=0,125

-0,125y⁴=-0,125*(-2)⁴=-0,125*16=2

12x²y= 12*(-0,3)²*⅙=12*0,09*⅙=0,18

-9x⁵y²= -9*(-1)⁵*(⅓)²=-9*(-1)*⅑=9*⅑=1