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( -2x )² + ( -2x)*(+5)*2 + (5)² = 1
4x² - 20x + 25 = 1
4x² - 20x + 25 - 1 = 0
4x² - 20x + 24 = 0
( 2x - 6 )( 2x - 4 ) = 0
ahora buscamos las soluciones:
2x - 6 = 0 y 2x - 4 = 0
2x = 6 y 2x = 4
x = 3 y x = 2
R: por lo tanto los valores de x son 2 y 3 .