Question

49) If (x+ 4)2-(x-2)2 =0, then the value of 'x' equals to
A) (-3)
B) (-1)
C) (-4)
D) (-2)​

Answer 1

answer:

(B) (-1)

in this question you have to use identities :

(a+b)²=a²+2ab+b²

(a-b)²=a²-2ab+b²