Q. 2 D5.0( 1 Vote )

Examine whether the following quadratic equations have real roots or not:

x2 + x – 1= 0

Answer :

TO CHECK REAL ROOTS, ‘d' SHOULD BE GREATER THAN 0.


d = b2 – 4ac


d = (1)2 – 4 (1) (–1)


d = 1 + 4


d = 5


Yes, roots are real.


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