Question

Q-4 Check whether the following are quadratic equations : (4)
(a) (2x - 1)(x - 3) = (x + 5) (x + 1)
(b) x^3 - 4x^2 - x + 1 = (x - 2)^3
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Answer 1

Answer:

(a) (2x-1)(x-3)=(x+5)(x+1)

2x2-7x+3=x2+4x-5

x2-11x+8=0

it is of the form of ax2+bx+c=0

Hence the given equation is quadratic equation