if the quadratic equation ax2+2x+a = 0 has two distinct roots if a = ?

Asked by Gurinder | 14th Dec, 2014, 01:58: PM

Expert Answer:

G i v e n space q u a d r a t i c space e q u a t i o n space a x squared plus 2 x plus a equals 0 D i s c r i m i n a n t equals b squared minus 4 a c equals open parentheses 2 close parentheses squared minus 4 cross times a cross times a equals 4 minus 4 a squared F o r space d i s t i n c t space r o o t s comma space D i s c r i m i n a n t greater than 0 rightwards double arrow 4 minus 4 a squared greater than 0 rightwards double arrow 4 open parentheses 1 minus a squared close parentheses greater than 0 rightwards double arrow 1 minus a squared greater than 0 rightwards double arrow 1 greater than a squared rightwards double arrow 1 greater than a

Answered by Vimala Ramamurthy | 14th Dec, 2014, 09:05: PM