(Q7) (1-1 ) solving quadratic equation in one variable.

1sec ≫First term  ≫ Algebra ≫Unit 1 ≫ (1-1 )  solving quadratic equation in one variable.

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(Q7)

The solution set of the equation \(x^2 - 2x = -1\) in \( \mathbb{R} \) is

(a) \( \{-1\} \)

(b) \( \varnothing \)

(c) \( \{-1, 1\} \)

(d) \( \{1\} \)

(d).