Question

check the following are quadratic equations or not

Q1. ( x-2 ) ( x +1 ) = ( x - 1 ) ( x + 3 )

Q2. (x+2)3 = 2x( x2 -1)

Q.3 x3 - 4x2 - x+1 = ( x - 2 )3


note :- You have to solve the whole equation and you have to check that the whole equation is quadratic or not :-))

THANK YOU ..
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Answer 1

Answer:

2 and 3 are quadratic equations