a) \(\orbr{\begin{cases}x=0\\x=10\end{cases}}\)
b) \(\orbr{\begin{cases}x=2\\x=4\end{cases}}\)
a) 7x(x-10)=0
<=> 7x=0 hoặc x-10=0
<=>x=0 hoặc x=10
Vậy \(x\in\left\{0;10\right\}\)
b) 17(3x-6)(2x-8)=0
<=>3x-6=0 hoặc 2x-8=0
<=>3x=6 hoặc 2x=8
<=>x=2 hoặc x=4
Vậy \(x\in\left\{2;4\right\}\)
\(a,7x\left(x-10\right)=0\)
\(Th1:7x=0\Leftrightarrow x=0\)
\(Th2:x-10=0\Leftrightarrow x=10\)
\(b,17\left(3x-6\right)\left(2x-8\right)=0\)
\(Th1:17=0\left(vl\right)\)vô nghiệm
\(Th2:3x-6=0\Leftrightarrow3x=6\Leftrightarrow x=2\)
\(Th3:2x-8=0\Leftrightarrow2x=8\Leftrightarrow x=4\)
a) 7(x-10)=0
x-10=0:7
x-10=0
x=0+10
x=10
Vậy x=10
b) 17(3x-6)(2x-8)=0
(3x-6)(2x-8)=0:17
(3x-6)(2x-8)=0
\(\Rightarrow\orbr{\begin{cases}3x-6=0\Rightarrow3x=6\Rightarrow x=6:3=2\\2x-8\Rightarrow2x=8\Rightarrow x=8:2=4\end{cases}}\)