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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: Giải phương trình: $\frac{\sqrt[]{x-3} }{\sqrt[]{2x+1} }$ = 2

Toán Lớp 9: Giải phương trình:
$\frac{\sqrt[]{x-3} }{\sqrt[]{2x+1} }$ = 2

Comments ( 1 )

  1. $\text{ $\frac{\sqrt{x-3}}{\sqrt{2x +1}}$ (x≥$\frac{3}{2})$ }$
    ⇔ $\sqrt{2x-3}$ = 2$\sqrt{x-1}$
    ⇔  $\text{2x-3 =  4 (x-1)}$ 
    ⇔  $\text{2x-3 = 4x- 4}$ 
    ⇔  $\text{2x- 4x= 3-4}$
    ⇔ $\text{-2x = -1}$
    ⇔$\text{x= $\frac{1}{2}$ (ko tm)}$
    ⇔$\text{Vậy x∈∅}$

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222-9+11+12:2*14+14 = ? ( )