Toán Lớp 8: Rút gọn biểu thức sau:
x+3 x-7
Q=_____ – ______
2x+1 2x+1
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Toán Lớp 8: Rút gọn biểu thức sau:
x+3 x-7
Q=_____ – ______
2x+1 2x+1
Comments ( 2 )
$=\dfrac{x+3-x+7}{2x+1}$
$=\dfrac{10}{2x+1}$
Vậy $Q=\dfrac{10}{2x+1}$