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vuvanhieu.1508
2 năm trước
giúp em với em cần trước 10h20 Cho biểu thức: Q= $\frac{2√x-9}{(√x-2)(√x-3)}$- $\frac{√x+3}{√x-2}$- $\frac{2√x+1}{3-√x}$ Với x $\geq$ 0;x $\neq$ 4;x $\neq$ 9 a)Rút gọn Q b)Tìm x để Q có giá trị nguyên c)Tìm x ∈ Z để Q có giá trị nguyên
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