Question

.If the equation x² + 4x + k = 0 has real and distinct roots, then

(a) k < 4
(b) k > 4
(c) k ≥ 4
(d) k ≤ 4​

Answer 1

Answer:

a)k<4

Sure answer

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Answer 2

Given equation ,

• x² + 4x + k = 0

And it is given that this quadratic equation has real and distinct roots.

So, Discriminant must be greater than "0" .

Now,

★ Discriminant = 4² - 4 × k × 1 = 16 - 4k

Since , Discriminant is greater than "0".

16 - 4k > 0

→ 16 > 4k

→ k < 16/ 4

→ k < 4

Answer:— (a) k < 4