Question

which of the following is a quadratic equation?
a) x²+2x+1 = (4-x)²+3
b) -2x² = (5-x) (2x - 2/5)
c) (k+1)x²+3/2x = 7 , where k=-1
d) x³-x²=(x-1)³​

Answer 1

Answer:

(a) part

Step-by-step explanation:

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Answer 2

option (A) is a correct answer of this question