Answers

  • Brainly User
2014-08-31T00:24:47+05:30
4x^2 +16x-7x-28=0
orr 4x(x+4)-7(x+4)
or   (4x-7)(x+4)=0
hence x=-4,7/4
0
2014-09-01T01:02:01+05:30