Question

The roots of the quadratic equation x²-1=0 are​

Answer 1

Answer:

1, -1

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Answer 2

Step-by-step explanation:

○ Sol :--

☆__ X^2 -1 = 0

=》 D = b^2 - 4ac

=》 D = 1 - 0

=》 D = 1

So,

☆____X => - b +_ root D/2 × 1

☆____X => 1 + root 1/2

☆ ___ X => 1 , -1