Question

the quadratic equation X square minus 2 root over 5 x + 15 equal to zero has two equal roots value of P is
A. 0
B. 1
C. 2
D. 3 ​

Answer 1

Answer:

0 or 3

Explanation:

Compare px² -2√5 px + 15 = 0 with

ax² + bx + c = 0

a = p , b = -2√5 , c = 15

We know that ,

If the roots of the quadratic equation

are equal , then it's discriminant (D)

equals to zero.

D = 0

b² - 4ac = 0

( -2√5 p )² - 4×p ×15 = 0

20p² - 60p = 0

20p( p - 3)= 0

Therefore ,

20p = 0 or ( p- 3 ) = 0

p = 0 or p = 3

Answer 2

Thx yll.... for marking my Ans as brainlist.... !!