Question

Find the value of determinant (
(x)2 + 7æ- 1 = 0​

Answer 1

Step-by-step explanation:

Given equation is x² +7x−1= 0

Discriminant=Δ= b²−4ac

where a=1,b=7 and c=−1

∴Δ=7²−4×1×−1=49+4=53>0