3. Calcula xy si: x - y = 7 ; x2 + y2 = 37 a) 6 b) 12 c) -6 d) 10 e) 15 6.... Question from @camila5184

December 2023 1 10 Report

3. Calcula xy si: x - y = 7 ; x2 + y2 = 37 a) 6 b) 12 c) -6 d) 10 e) 15 6

gatomiau22

(x-y) al cuadrado es 49

x al cuadrado -2xy + y al cuadrado es 49

37-2xy es 49

xy vale -6

3 votes Thanks 2

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