India’s No.1 Educational Platform For UPSC,PSC And All Competitive Exam
(x+y-3z)(x+y+3z)
(x-y-3x)(x-y+2z)
(x+y-3z)(x-y+3z)
(x-2y+3z)(x-y+3z)
Your comments will be displayed only after manual approval.
Post your Comments