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What is the nature of the roots of 3x2+6x−5=03x^2+6x-5=03x2+6x−5=0​ ?
Question

What is the nature of the roots of 3x2+6x5=03x^2+6x-5=0​ ?

A.

The roots are real and distinct.

B.

The roots are real and equal.

C.

The roots are real and more than 2.

D.

There are no real roots.

Correct option is A

Given:
The quadratic equation is 3x2+6x5=03x^2+6x − 5=0​.
Concept Used:
To determine the nature of the roots, we calculate the discriminant (D) of the quadratic equation. The discriminant is given by D=b24acD=b^2−4ac​. The nature of the roots depends on the value of D:
If D > 0, the roots are real and distinct.
If D = 0, the roots are real and equal.
If D < 0, the roots are complex (non-real) and conjugate.
Solution:
From 3x2+6x5=0:3x^2+6x−5=0:​​
a = 3, b = 6, c = −5
Now,
D =b24ac b^2−4ac​​
D = 6243(5)62−4⋅3⋅(−5)​​
D = 36 + 60 = 96
Since D = 96 > 0, the roots are real and distinct.
Thus, the roots of the equation 3x^2+6x−5 = 0 are real and distinct.

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