Question

The value of discriminant for the equation x²+7x-1=0 is ……………………
a)-53
b)53
c)49
d)-49​

Answer 1

Given equation is x

2

+7x−1=0

Discriminant=Δ=b

2

−4ac

where a=1,b=7 and c=−1

∴Δ=7

2

−4×1×−1=49+4=53>0

Answer 2

Step-by-step explanation:

= b^2-4ac

= 49+4

= 53

hence, (b) 53 is the correct answer