Question 1(iii)
Check whether the following are quadratic equations:
$(i i i) (x - 2) (x + 1) = (x - 1) (x + 3)$

Open in App

Solution

$(i i i) (x - 2) (x + 1) = (x - 1) (x + 3) \Rightarrow x^{2} - x - 2 = x^{2} + 2 x - 3 \Rightarrow 3 x - 1 = 0$
It is not of the form $a x^{2} + b x + c = 0$ as a = 0 in this case.
Hence, the given equation is not a quadratic equation.

Suggest Corrections

Similar questions

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

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

Question 1(ii)
Check whether the following are quadratic equations:
$(i i) x^{2} - 2 x = (- 2) (3 - x)$

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

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

Join BYJU'S Learning Program

Explore more

Join BYJU'S Learning Program