Question

Tim x

7x.(x-10)=0

minh can cach lam ai nhanh minh tk

Answer 1

\(7x\cdot\left(x-10\right)=0\Rightarrow7x=0\)hoặc  \(x-10=0\)

\(TH1:7x=0\Rightarrow x=0\)

\(TH2:\left(x-10\right)=0\Rightarrow x=10\)

Vậy \(x=0\)hoặc \(x=10\)

Answer 2

7x.(x-10)=0

->7x^2 -70=0

->7x^2 =70 ->x^2=10 -> x=cân 10

Answer 3

x-10=0:7x

x-10=0

x=0+10

x=10

Answer 4

\(7x.\left(x-10\right)=0\)

\(\Rightarrow\orbr{\begin{cases}7x=0\\x-10=0\end{cases}\Rightarrow\orbr{\begin{cases}x=0\\x=10\end{cases}}}\)

Vậy x = 0,10