Question

Which of the following is a quadratic equation?
(A) x2 + 3x + 1 = (x - 2)2
(B) (x + 1)2 = 5 (x – 9)
(C) X-1 = 0
(D) 5x + 9 = 0​

Answer 1

Answer:

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Step-by-step explanation:

first one