- #1
Автор Темы:
mobytechesc
25-45=16-36
25-45+81/4=16-36+81/4
5^2-2*5*(9/2)+(9/2)^2=4^2-2*4*(9/2)+(9/2)^2
(5-9/2)^2=(4-9/2)^2
5-9/2=4-9/2
5=4
5=2*2
25-45+81/4=16-36+81/4
5^2-2*5*(9/2)+(9/2)^2=4^2-2*4*(9/2)+(9/2)^2
(5-9/2)^2=(4-9/2)^2
5-9/2=4-9/2
5=4
5=2*2