( 2 : x – 1/3 ) . ( x mũ 3 – 8 ) = 0 HELP ME ! 13/08/2021 Bởi Valentina ( 2 : x – 1/3 ) . ( x mũ 3 – 8 ) = 0 HELP ME !
Đáp án: `(2 : x -` `\frac{1}{3}“)` `.(` $x^{3}$ `- 8)` `= 0` ⇔ \(\left[ \begin{array}{l}2:x -\frac{1}{3} = 0\\x^{3}-8=0\end{array} \right.\) ⇔ \(\left[ \begin{array}{l}2:x = 0+\frac{1}{3}\\x^{3}=0+8\end{array} \right.\) ⇔ \(\left[ \begin{array}{l}2:x = \frac{1}{3}\\x^{3}=8\end{array} \right.\) ⇔ \(\left[ \begin{array}{l}x = 2:\frac{1}{3}\\x^{3}=2^{3} \end{array} \right.\) ⇔ \(\left[ \begin{array}{l}x = 6\\x=3 \end{array} \right.\) Vậy `x = 2` hoặc `x = 6` Bình luận
Đáp án: ` ( 2 : x -(1)/3) . (x^3-8) = 0` ` =>` \(\left[ \begin{array}{l}2:x-\dfrac{1}{3}=0\\x^3-8 =0\end{array} \right.\) ` => ` \(\left[ \begin{array}{l}2:x=\dfrac{1}{3}\\x^3 =8\end{array} \right.\) `=> ` \(\left[ \begin{array}{l}x=2:\dfrac{1}{3}\\x^3=2^3\end{array} \right.\) ` =>` \(\left[ \begin{array}{l}x=6\\x=2\end{array} \right.\) Vậy ` x =2` hoặc ` x = 6` Bình luận
Đáp án:
`(2 : x -` `\frac{1}{3}“)` `.(` $x^{3}$ `- 8)` `= 0`
⇔ \(\left[ \begin{array}{l}2:x -\frac{1}{3} = 0\\x^{3}-8=0\end{array} \right.\)
⇔ \(\left[ \begin{array}{l}2:x = 0+\frac{1}{3}\\x^{3}=0+8\end{array} \right.\)
⇔ \(\left[ \begin{array}{l}2:x = \frac{1}{3}\\x^{3}=8\end{array} \right.\)
⇔ \(\left[ \begin{array}{l}x = 2:\frac{1}{3}\\x^{3}=2^{3} \end{array} \right.\)
⇔ \(\left[ \begin{array}{l}x = 6\\x=3 \end{array} \right.\)
Vậy `x = 2` hoặc `x = 6`
Đáp án:
` ( 2 : x -(1)/3) . (x^3-8) = 0`
` =>` \(\left[ \begin{array}{l}2:x-\dfrac{1}{3}=0\\x^3-8 =0\end{array} \right.\)
` => ` \(\left[ \begin{array}{l}2:x=\dfrac{1}{3}\\x^3 =8\end{array} \right.\)
`=> ` \(\left[ \begin{array}{l}x=2:\dfrac{1}{3}\\x^3=2^3\end{array} \right.\)
` =>` \(\left[ \begin{array}{l}x=6\\x=2\end{array} \right.\)
Vậy ` x =2` hoặc ` x = 6`