Question

Find the discriminant of equation 5 x square - 4 root 5 x + 4=0 and hence find the nature of roots

Answer 1

Answer:

Discriminant is equal to 0.Roots are real and equal.

Step-by-step explanation:

5x^2 - 4 root 5x + 4 =0

Discriminant d = b^2 - 4ac

Here,

A = 5, b = 4 root 5 and c = 4

D = (4 root5) ^2 - 4 ☓ 5 ☓ 4

D= (16 ☓ 5) - 80

D = 80 - 80

D = 0

Since D = 0.

Therefore,

➡️ Roots are real

➡️ Roots are equal

Roots = - b + rootD/2A

Roots = - (- 4 root 5) + 0/10

Roots = 4root5/10

Roots = 2root 5/5

Hope this helps.....

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