Question

The value of 'afor which the equation
ax2 - 2 root 5x + 4 = 0 has equal roots, is​

Answer 1

Answer:

a = 5/4

Step-by-step explanation:

ax² - 2√5x + 4 = 0

For any quadratic equation to have equal roots the value of its discriminant should be zero.

D = b² - 4ac

In the above equation,

a = a

b = -2√5

c = 4

D = (-2√5)² - 4(a)(4)

0 = 20 - 16a

20 = 16a

a = 20/16

a = 5/4

Hope it helps you....