Question

(2x + 10) ( 3x - 12 ) = 0

Answer 1

(2x + 10)(3x - 12) = 0

2(x + 5) . 3(x - 4) = 0

6(x + 5)(x - 4) = 0

=> (x + 5)(x - 4) = 0

=> x + 5 =0 hoặc x - 4 = 0

=> x = -5 hoặc x = 4

Vậy x E {-5; 4}

Answer 2

\(\left(2x+10\right)\left(3x-12\right)=0.\Leftrightarrow\left[{}\begin{matrix}2x+10=0.\\3x-12=0.\end{matrix}\right.\) \(\Leftrightarrow\left[{}\begin{matrix}x=-5.\\x=4.\end{matrix}\right.\)

Vậy \(x\in\left\{-5;4\right\}.\)

Answer 3

Tham khảo bài làm:
 

(2x + 10)(3x - 12) = 0

2(x + 5) . 3(x - 4) = 0

6(x + 5)(x - 4) = 0

=> (x + 5)(x - 4) = 0

=> x + 5 =0 hoặc x - 4 = 0

=> x = -5 hoặc x = 4

Vậy x E {-5; 4}

Answer 4

(2x + 10)(3x - 12) = 0

2(x + 5) . 3(x - 4) = 0

6(x + 5)(x - 4) = 0

=> (x + 5)(x - 4) = 0

=> x + 5 =0 hoặc x - 4 = 0

=> x = -5 hoặc x = 4

Vậy x E {-5; 4}