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

Toán Lớp 7: b) |????|−(1 phần 3) mũ 2 = (-1) mũ 2022

Toán Lớp 7: b) |????|−(1 phần 3) mũ 2 = (-1) mũ 2022

Comments ( 2 )

  1. |x|- (1/3)^2 = (-1)^2022
    => |x| – 1/9 = 1
    => |x| =1+1/9
    => |x| = 9/9 +1/9
    => |x | =10/9
    => x \in {10/9 ; -10/9}
    Vậy x \in {10/9 ; -10/9}

  2. $\text{|x| – $(\dfrac{1}{3})^{2}$ = $(-1)^{2022}$}$
    $\text{|x| – $\dfrac{1}{9}$ = 1}$
    $\text{|x| = 1 + $\dfrac{1}{9}$}$
    $\text{|x| = $\dfrac{10}{9}$}$
    $\text{⇒ x = ± $\dfrac{10}{9}$}$
    $\text{Vậy x = ± $\dfrac{10}{9}$}$
    $\textit{Ha1zzz}$

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