Question

Identify which of the following is a quadratic equation 

(x-2)(x+1)=(x-1)(x+3)

x² +3x+1 = (x-2)²

x² -2x = -2 (3-x)

(x+ 2)³ = 2x (x² -1)

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Answer 1

Answer:

x² +3x+1 = (x-2)²

Step-by-step explanation:

x² +3x+1 = (x-2)²