Multiply
(j + 7)(j – 7)
Aj 2 + 14j – 49
Bj 2 – 14j – 49
Cj 2 + 14j – 49
Dj 2 – 49
(j + 7)(j – 7)
Aj 2 + 14j – 49
Bj 2 – 14j – 49
Cj 2 + 14j – 49
Dj 2 – 49