Question

Suppose $a, b$ denote the distinct real roots of the quadratic polynomial $x^{2}+20 x-2020$ and suppose $c, d$ denote the distinct complex roots of the quadratic polynomial $x^{2}-20 x+2020$. Then the value of $a c(a-c)+a d(a-d)+b c(b-c)+b d(b-d)$ is

• A. 0
• B. 8000
• C. 8080
• D. 16000

Answer 1

Answer: (D)

16000

Answer 2

The Correct Option is (D):16000