(18+x)do kwadratu +21 do kwadratu= (27+x) do kwadratu
Jak to rozwiązać?
18^2+2*18*x+x^2+21^2=27^2+2*27*x+x^2
X^2+36x+324+441-x^2-54x-729=0
-18x+36=0
-18x=-36
x=2
324+36x+x^2+441=729+54x+x^236x + x^2 - x^2 - 54x= 729 - 324
-18x=405/ - 18
x = - 405/18
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18^2+2*18*x+x^2+21^2=27^2+2*27*x+x^2
X^2+36x+324+441-x^2-54x-729=0
-18x+36=0
-18x=-36
x=2
324+36x+x^2+441=729+54x+x^2
36x + x^2 - x^2 - 54x= 729 - 324
-18x=405/ - 18
x = - 405/18