Trục căn thức
1Trục căn thức
1/√5-√3+2 = 1/(√5-√3)+2
2,rút gọn
a,(2-√2).(-5√2)-(3√2-5)^2
b,2√3a-√75a-(2/3).√300a^3(a>0)
c,(√a+√b/√a-√b)+(√a-√b/√a+√b)(a>=0,b>=0,a=/0)
d,(a-b/√a-√b)-(√a^3-√b^3/a-b)(a>=0,b>=0,a=/0)
1/√5-√3+2 = 1/(√5-√3)+2
2,rút gọn
a,(2-√2).(-5√2)-(3√2-5)^2
b,2√3a-√75a-(2/3).√300a^3(a>0)
c,(√a+√b/√a-√b)+(√a-√b/√a+√b)(a>=0,b>=0,a=/0)
d,(a-b/√a-√b)-(√a^3-√b^3/a-b)(a>=0,b>=0,a=/0)