Which of the following equations has both 1 and −3 as solutions? a. 𝑥^2 − 2𝑥 − 3 = 0 b. 𝑥^2 + 2𝑥 − 3 = 0 c. 𝑥^2 − 4𝑥 + 3 = 0 d. 𝑥^2 + 4𝑥 + 3 = 0
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