Question

Identify which of the following is not a quadratic equation? (x+1)²=2(x_3),x²_2x=(_2)(3_x),x²+3x+1=(x_2)²

Answer 1

Answer:

case 1

(x+1)² = 2(x-3)

x²+x+1 = 2x-6

x²-x +7 ..

case 2

x²-2x = (-2)(3-x)

x²-2x = -6 +2x

x² +6

case 3

x² +3x +1 = (x-2)²

x²+3x+1 = x²-4x +4

7x-3

CASE 3 IS THE CORRECT ANSWER...