5х^2 = 22x + 15 значение х. Created by juulikene. matematika-ru

5х^2 = 22x + 15 значение х...

June 2022 1 10 Report

5х^2 = 22x + 15
значение х

yellok 5x²=22x+15
5x²-22x-15=0
D=11²+15*5=121+75=196
x(1)=(11-√196)/5=(11-14)/5=-3/5
x(2)=(11+√196)/5=(11+14)/5=25/5=5

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