Question

Which of the following is a quadratic equation? (A) x 2+ 2x + 1 = (4 – x) 2+ 3 (B) –2x 2 = (5 – x){2x – 2/5} (C) (k + 1)x 2 + 3 2 = 7, where k = –1 (D) x 3 – x 2 = (x – 1)3

Answer 1

Answer:

Step-by-step explanation:

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