October 2018 1 18 Report
10.Calcular 20132 – 2 (2013)(2011) + 20112 11. Si a+b=9 y ab=2. Calcular a2 +b2 12. Si x2 +y 2 =82; x+y=10. Calcular xy 13. Si x x 1 + = 6 . Calcular x x 2 1 2 + 14. Si x x 1 − = 3 . Calcular x x 2 1 2
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