Question

Which of the following is a quadratic equation?
O 23 - 22 = (2-1)3
O x2 + 2x + 1 = (4 - 2)2 + 3
N
0-222 = (5 – x) (2x - 3)
O (k+1)x² + - 5 = 0, where k = -1​

Answer 1

Answer:

O (k+1)x² + - 5 = 0, where k = -1

Step-by-step explanation:

it looks like quadratic equation