EXERCISE 4.1 1. Check whether the following are quadratic equations :
(i) x² – 2x =(-2)(3 – x)
(ii) (x-2)(x+1)=(x - 1)(x+3)
(iii) (x − 3)(2x+1)= x(x + 5)
(i) x² – 2x =(-2)(3 – x)
(ii) (x-2)(x+1)=(x - 1)(x+3)
(iii) (x − 3)(2x+1)= x(x + 5)
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