Answers

2015-06-09T20:08:31+05:30
X2 + 7x + 10 = 0
or, x2 +2x+5x +10 = 0
or, (x+2)(x+5)  = 0
or, x = -2,-5

So, x2 + 7x + 10 = -2*-2 + 7*-2 + 10 = 4+10-14 = 0
Again, x2 + 7x + 10 = -5*-5 + 7*-5 +10 = 25+10-35 = 0
0