Mathematics, 24.06.2019 11:30 Uhmjujiooo4220

What are the solutions of the equation? x^2+4x=21 a. 23, -27 b. 3, -7 c. -3, 7 d. 4.8, -4.8

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What are the solutions of the equation? x^2+4x=21 a. 23, -27 b. 3, -7 c. -3, 7 d. 4.8, -4.8...