If y = (x + 3)2, then (– 2x – 6)2 is equal to · ABC26GN0961

Subject: General Aptitude · Chapter: Simplification

If y = (x + 3)2, then (– 2x – 6)2 is equal to

(a)– 4y2

(b)– 2y2

(c)– 4y

(d)2y

(e)4y

Answer

Answer (as printed): E

Explanation

(– 2x – 6)2 = [– 2(x + 3)]2 = 4(x + 3)2 = 4y.

Explanation as extracted from the printed page; notation may be imperfect.

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