Question

Find the value of ‘a’, if the following quadratic equation has equal roots: x2 + ax + 4 = 0.

Answer 1

Step-by-step explanation:

If roots are equal then, b²-4ac=0

In equation, b=a, a=1, c=4.

b²-4ac=a²-4(1)(4)=0

a²-16=0

a²=16

a=√16=4.

Hope helps u.

Answer 2

Answer:

answer attached in photo