Question

pls solve this class 10 maths board paper question​

Answer 1

For distinct real roots

$\sf{D>0}$

$\sf{b^2-4ac>0}$

$\sf{(-4)^2-4(1)(k)>0}$

$\sf{16-4k>0}$

$\sf{16>4k}$

$\sf{4>k}$

$\sf{k<4}$

Hence, option (D) is the correct answer.

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Answer 2

Answer:

answer is option d) k < 4

k is less than 4

Step-by-step explanation:

distinct real roots are possible if b²- 4ac > 0

i.e. (-4)²-4(1)(k)>0

= 16-4k>0

= -4k > -16

= k< -16/-4 (symbol changed because we multiplied the. equation with minus)

= k<4

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