Question

what will be the value of 'b', if the Quadratic equation x²-bx + 4 =0 has equal roots




I need a quick ans ​

Answer 1

Answer:

-4, +4

Step-by-step explanation:

The Equation is x

2

+bx+4=0.

We know that for the quadratic equation having equal roots the discriminant is zero.

Therefore, D=b

2

−4ac=0

Here, a=1,b=b,c=4

Now putting above values in the discriminant we get,

D=b

2

−4×1×4=0

⇒b

2

=16

⇒b=−4,+4

Answer 2

Answer:

YOUR ANSWER MATE

Step-by-step explanation:

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