September 2019 2 33 Report
Jika (-a)² + (-b)² = 2015 dan a+b = 2015 maka setengah dari dua kali dari hasil kali a dan b adalah ...

a. 2015 x 2016
b. 2015 x 1008
c. 2015 x 2014
d. 2015 x 1007

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