Question

1. Which one of the following is not a quadratic equation?
(a) (x + 2)2 = 2(x + 3)
(b) x2+3x=-1(1-3x) 2
(c) (x+2) (x-1) = x2 -2x-3
(d) x3 - x2 +2x +1= (x+2)3​

Answer 1

Answer:

d is the correct answer

Step-by-step explanation:

as it is a cubic equation

Answer 2

Answer:

(c)

Step-by-step explanation:

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

X2+2x-x-2 = x2-2x-3

cancel x2 on both sides

x-2 = -2x -3

x + 2x -2 + 3 = 0

3x + 1 = 0 It is a linear equation.