The value/s of x when (x - 4) (3x + 2) = 0 ________
4, -2/3
4, 2/3
-4, - 2/ 3
-4, 2/3
⇒ (x - 4) (3x + 2) = 0
⇒ (x - 4) = 0; ( 3x + 2) = 0
⇒ x = 4; x = -2/3
If (a+b , a-b) = (4, 2), what is ab ?