Câu hỏi của Thu Dieu

Question

Viet tap hop x theo cach liet ke

x={xEN/2×x(2×x-6)(3×x-15)=0

Mashiro Shiina · Accepted Answer

$x=\left\{x\in N;2x\left(2x-6\right)\left(3x-15\right)\right\}=0$

$\Leftrightarrow2x=0\Rightarrow x=0$

$2x-6=0\Rightarrow2x=6\Rightarrow x=3$

$3x-15=0\Rightarrow3x=15\Rightarrow x=5$

$\Rightarrow x=\left\{0;3;5\right\}$Câu trả lời: $x=\left\{x\in N;2x\left(2x-6\right)\left(3x-15\right)\right\}=0$

$\Leftrightarrow2x=0\Rightarrow x=0$

$2x-6=0\Rightarrow2x=6\Rightarrow x=3$

$3x-15=0\Rightarrow3x=15\Rightarrow x=5$

$\Rightarrow x=\left\{0;3;5\right\}$

Ôn tập toán 6