Answers

2015-01-27T20:28:17+05:30
49x⁴-168x²y²+144y⁴
=(7x²)²-2(7x²)(12y²)+(12y²)²
=(7x²-12y²)²
=(7x²+12y²)(7x²-12y²)
=(7x²+12y²)(√7x-√12y)(√7x+√12y)
0