" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
T= (2a+3b)^2-(2a-3b)^2
(2a+3b)^2-(2a-3b)^2
((2a)^2 + 2 (2a)*(3b) + (3b)^2 ) - ((2a)^2 - 2 (2a)*(3b) + (3b)^2)
( 4a^2 + 12 b + 9b^2 ) - (4a^2 - 12 b + 9b^2)
4a^2 + 12 b + 9b^2 -4a^2 + 12 b - 9b^2
T = 24b ....... fin
ejercicio b).................................
(m+5n)^2-(n+5m)^2...............
(m2 + 10 mn + 25 n2) -(n2 +10nm +25 m2).........uniendo ambos..
m2 +25 n2 - 25 m2 - n2+ 10 mn - 10 mn
te da
24 n2 - 24 m2
finalmente obtienes
R = 24*(n2- m2)