Question

(x-8).(x-7)= 0

Answer 1

\(\left(x-8\right).\left(x-7\right)=0\)

\(\Rightarrow\)\(x-8=0\) hoặc \(x-7=0\)

Nếu:\(x-8=0\)

        \(x=0+8\)

        \(x=8\)

Nếu:\(x-7=0\)

\(x\)=0+7

\(x\)=7.

Vậy \(x=8\) hoặc \(x=7.\)

Answer 2

(x-8)(x-7)=0

<=>x-8=0 hoặc x-7=0

<=>x=8 hoặc x=7

Answer 3

x=7 hoac x=8