Toán Lớp 6: (3.x + 2 ) ²=196
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Toán Lớp 6: (3.x + 2 ) ²=196
Chỉ cần đáp án thôi nhé!
Comments ( 2 )
<=>\(\left[ \begin{array}{l}3x+2=14\\3x+2=-14\end{array} \right.\)
<=>\(\left[ \begin{array}{l}3x=12\\3x=-16\end{array} \right.\)
<=>\(\left[ \begin{array}{l}x=4\\x=\dfrac{-16}3\end{array} \right.\)
Vậy : x in {(-16)/3; 4}