化简根号下m^3乘n^4(m>0)
问题描述:
化简根号下m^3乘n^4(m>0)
根号下25(x+y)^2/x-y(x≥y>0)
答
(1)
√(m³n⁴)=√[(mn²)²xm]=mn²√m
(2)
√[25(x+y)^2/(x-y)]=5(x+y)√[1/(x-y)]=5(x+y)/(x-y)*√(x-y)