Question

3. The value of p for equation 2x2 - 4x +p=0 to have real roots will be
a. p>2 b. p <2 c. p <-2 d. p>-2
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Answer 1

Answer:

b

Step-by-step explanation:

for real roots discriminant must be greater than 0 . Put D>0 and get answer

Answer 2

Answer:

p<2

Step-by-step explanation:

a quadratic equation gives real root when (b²-4ac) is either equal to or greater than 0.

in this case, b²-4ac= (-4)²-4*2*p=16-8p

so, 16-8p>0

=>. 16>8p

=> 2>p

and in another case, 16-8p=0 =>16=8p =>p=2..

so i think option (b) is correct