Trần Ngọc Mai
Giới thiệu về bản thân
a,P=(x-2/x+2√x + 1/√x +2)*√x +1/√x -1
=[x-2/√x* (√x +2)+√x /√x* (√x +2)]*√x +1/√x -1
=x+√x -2/√x *(√x +2)*√x +1/√x -1
=(√x -1)(√x +2)/√x *(√x +2)*√x +1/√x -1
=√x +1/√x
b,x=1/2
a,P=(x-2/x+2√x + 1/√x +2)*√x +1/√x -1
=[x-2/√x* (√x +2)+√x /√x* (√x +2)]*√x +1/√x -1
=x+√x -2/√x *(√x +2)*√x +1/√x -1
=(√x -1)(√x +2)/√x *(√x +2)*√x +1/√x -1
=√x +1/√x
b,x=1/2
a,P=(x-2/x+2√x + 1/√x +2)*√x +1/√x -1
=[x-2/√x* (√x +2)+√x /√x* (√x +2)]*√x +1/√x -1
=x+√x -2/√x *(√x +2)*√x +1/√x -1
=(√x -1)(√x +2)/√x *(√x +2)*√x +1/√x -1
=√x +1/√x
b,x=1/2
a,P=(x-2/x+2√x + 1/√x +2)*√x +1/√x -1
=[x-2/√x* (√x +2)+√x /√x* (√x +2)]*√x +1/√x -1
=x+√x -2/√x *(√x +2)*√x +1/√x -1
=(√x -1)(√x +2)/√x *(√x +2)*√x +1/√x -1
=√x +1/√x
b,x=1/2
a,P=(x-2/x+2√x + 1/√x +2)*√x +1/√x -1
=[x-2/√x* (√x +2)+√x /√x* (√x +2)]*√x +1/√x -1
=x+√x -2/√x *(√x +2)*√x +1/√x -1
=(√x -1)(√x +2)/√x *(√x +2)*√x +1/√x -1
=√x +1/√x
b,x=1/2
a,P=(x-2/x+2√x + 1/√x +2)*√x +1/√x -1
=[x-2/√x* (√x +2)+√x /√x* (√x +2)]*√x +1/√x -1
=x+√x -2/√x *(√x +2)*√x +1/√x -1
=(√x -1)(√x +2)/√x *(√x +2)*√x +1/√x -1
=√x +1/√x
b,x=1/2
a,P=(x-2/x+2√x + 1/√x +2)*√x +1/√x -1
=[x-2/√x* (√x +2)+√x /√x* (√x +2)]*√x +1/√x -1
=x+√x -2/√x *(√x +2)*√x +1/√x -1
=(√x -1)(√x +2)/√x *(√x +2)*√x +1/√x -1
=√x +1/√x
b,x=1/2
a,A=4x/√x-3
b,x=1
a,P=√a-2/3√a
b,a>16
1,A=9/5
2,x+4/x-4-2/√x-2
=x+4/(√x-2)(√x+2)-2/√x-2
=x+4-2(√x+2)/(√x-2)(√x+2)
=x+4-2√x-4/(√x-2)(√x+2)
=x-2√x/(√x-2)(√x+2)
=√x(√x-2)/(√x-2)(√x+2)
=√x/√x+2
3,x=35