Question

If the equation ar? + 2x + a = 0 has two real and equal roots, find the value of a.
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Answer 1

Answer:

+1 or -1

Step-by-step explanation:

b^2-4ac = 0 then

ax^2 + 2x + a = 0 has two real and equal roots.

4- 4a^2=0

4= 4a^2

4/4=a^2

1=a^2

a = + 1 or - 1