Question

XERCISE 4.7
1 Check whether the following are quadratic
equations:
() (x + 1)2 = 2(x - 3)
(ii) x2 – 2x =(-2)(3 – x)
(iii) (x - 2)(x + 1) =(- 1)(x + 3)
(iv) (x - 3)(2x + 1) = x (x + 5)
(v) (2x - 1)(x - 3)=(x + 5)(x - 1)
(vi) x2 + 3x +1=(x - 2)2
(vii) (x + 2)2 = 2x (x2 - 1)
(vii) x2 - 4x2 - x + 1 = (x - 2)3


solve it 4th question​

Answer 1

Answer:

yes all the sum is in a quadratic equation