Question

the roots of the quadratic equation 4x²-px+1 are equal. Therefore the value of p is ___​

Answer 1

Answer:

Step-by-step explanation:

since the roots are  equal  then its discriminant is zero as per condition.

implies D=0

given quadratic have

a=4, b=-p and c=1

and we know that D= $b^2-4ac$

so D= $(-p)^2$-4(4)(1)

D=p^2-16

0=p^2-16

p^2=16

implies p=$\pm 4$