Question

Tìm x :

(x-2).(x+15)=0

 

Answer 1

 

(x-2).(x+15) = 0

=> x - 2 = 0 hoặc x + 15 = 0

=> x = 0 + 2 hoặc x = 0 - 15

=> x = 2 hoặc x = -15

Answer 2

\(\left(x-2\right).\left(x+15\right)=0\)

\(\Leftrightarrow\left[\begin{array}{nghiempt}x-2=0\\x+15=0\end{array}\right.\)

\(\Leftrightarrow\left[\begin{array}{nghiempt}x=2\\x=-15\end{array}\right.\)

Vậy \(x\in\left\{2;-15\right\}\)

 

Answer 3

(x-2). (x +15)=0

x-2=0 hoac x+15=0

x=0+2hoac x =0-15

x = 2 hoac x = -15

vay x=2 hoac -15

 

Answer 4

x.2 =0 hoặc x+15=0

x =0:2 x =0-15

x =0 x = -15

Vậy x = 0 ; x = -15