Question

Which of the following is a quadratic equation?

(a) x2 + 2x + 1 = (4 – x)2 + 3
(b) –2x2 = (5 – x)(2x –2/5)
(c) (k + 1)x2 +3/2x = 7, where k ≠1
(d) x3– x2 = (x – 1)3.

Answer 1

Answer:

option C

Step-by-step explanation:

(k-1)x^2 +3/2x=7

kx^2+3/2x

the degree of polynomial is 2 hence it is quadratic polynomial..