Question

Find the real value(s) of 'a' for which the equation x2 + 2x + (a^2 +1) = 0 has real roots. Justify your answer.​

Answer 1

Answer:

If an equation had real roots then,

D = b²- 4ac =0

let's put values,

2²-4(1)(a²-1) = 0

4-4a²+4 = 0

8-4a² = 0

4a² = 8

a² = 2

a= √2.

Hope it helps.

Mark Brainer.

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