Which of the following is a quadratic equation ? *
(a). (x+1)²=2(x-1)
(b) (x-2)(x+1)=(x-1)(x+3)
(c) x²+3x+1= (x-2)²
(d) *(x+2)³ = 2x(2x
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Answer:
part c
Step-by-step explanation:
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