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Suppose a,b denote the distinct real roots of x^2+2x-2020=0 & c,d complex roots of x^2-20x+2020=0.
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Suppose a,b denote the distinct real roots of the quadratic polynomial x^2+2x-2020=0 and suppose c,d denote the distinct complex roots of the quadratic polynomial x^2-20x+2020=0. Then the value of ac(a-c)+ad(a-d)+bc(b-c)+bd(b-d) is ___?
A. 0
B. 8000
C. 8080
D. 16000
A. 0
B. 8000
C. 8080
D. 16000
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