Q2 of 168 Page 7

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

7x2 + 8x — 1 = 0

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


d = b2 – 4ac


d = (8)22 – 4 (7) (–1)


d = 64 – 28


d = 92


Yes, roots are real.


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