" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2do x -9
x^2 - (x-9)^2 = 9
x^2 - (x^2 mas 9^2-(2)(x)9) = 9
x^2 - x^2 - 9^2 mas 18x = 9
-9 mas 2x = 1
2x = 10
x = 5
5-9 = -4 respuesta