计算√0.49-³√8分之7-1-√(－3)²,

√0.49-³√8分之7-1-√(－3)²
=0.7-³√(-1/8)-3
=0.7+1/2-3
=7/10+1/2-3
=7/10+5/10-30/10
=-18/10
=-9/5
|√5-3|+√(-2)²+(√5-1)º-√36
=3-√5+2+1-6
=-√5
(x-5)³=－125
(x-5)^3=(-5)^3
x-5=-5
x=0