De oplossing van
(x − 3)2 = (x − 3)(x + 3)
is
A.    0
B.   − 3
C.    3
D.   niet geheel
E.   bestaat niet
F.   elk reëel getal
A    B    C    D    E    F

[ 4-4421 - op net sinds 21.10.04-(E)-29.10.2023 ]

Translation in   E N G L I S H

The solution of the equation
(x − 3)2 = (x − 3)(x + 3) 		A.   is  0
B.   is − 3
C.   is  3
D.   not integer
E.   does not exist
F.   every real number

Oplossing - Solution

  (x − 3)2 = (x − 3)(x + 3)
 ⇔  x² − 6x + 9 = x² − 9
 ⇔  − 6x = −18
 ⇔  x = 3
gricha