Question

Which of the following is a quadratic equation? *

1 point

a) x² + 2x + 1 = (4 – x)² + 3

b) -2x² = (5-x)(2x – 2/5)

c) (k + 1)x² + (3/2)x = 7, k= -1

d) x³ – x² = (x – 1)³
​

Answer 1

Answer:

A

bcz quadratic equation must be ax2+bx+c

so point A is the correct answer...

Answer 2

I think it's B.......

hope it helps