Cho \(A = \frac{{\sqrt x }}{{\sqrt x - 2}};\,\,B = \frac{2}{{\sqrt x + 2}} + \frac{{4\sqrt x }}{{x - 4}}\)
a) Tính A khi \(x = 9\).
b) Thu gọn \(T = A - B\)
c) Tìm x để T nguyên.
A.a) \(A= 8 \) b) \(T= \frac{{\sqrt x + 2}}{{\sqrt x - 2}}\)
c) \(x = 9\)
B.a) \(A= 3 \) b) \(T= \frac{{\sqrt x + 2}}{{\sqrt x -2}}\)
c) \(x = 5\)
C.a) \(A= 3 \) b) \(T= \frac{{\sqrt x - 2}}{{\sqrt x + 2}}\)
c) \(x = 0\)
D.a) \(A= 7 \) b) \(T= \frac{{\sqrt x - 2}}{{\sqrt x + 2}}\)
c) \(x = 1\)
a) Tính A khi \(x = 9\).
b) Thu gọn \(T = A - B\)
c) Tìm x để T nguyên.
A.a) \(A= 8 \) b) \(T= \frac{{\sqrt x + 2}}{{\sqrt x - 2}}\)
c) \(x = 9\)
B.a) \(A= 3 \) b) \(T= \frac{{\sqrt x + 2}}{{\sqrt x -2}}\)
c) \(x = 5\)
C.a) \(A= 3 \) b) \(T= \frac{{\sqrt x - 2}}{{\sqrt x + 2}}\)
c) \(x = 0\)
D.a) \(A= 7 \) b) \(T= \frac{{\sqrt x - 2}}{{\sqrt x + 2}}\)
c) \(x = 1\)
Loga
Hóa Học lớp 12
