
koren
Presentation
•
Mathematics
•
7th - 8th Grade
•
Hard
Digitalna Ucionica
Used 4+ times
FREE Resource
8 Slides • 0 Questions
1
КОРЕН
а
2
Колико решења има једначина
a2=16 ? a=4 јер је 42=16
a=−4 јер је (−4)2=16 Значи има два решења.
3
Колико има решења једначина
a2=25 ?4
Прво решење је
a=25 → a=5 јер је 52=25
Друго решење је а=−25 → a=−5 јер је (−5)2=25
5
Реши следеће једначине
a) x2=81
б) x2=0
в) x2=17
6
а) x2=81
x=81 или x=−81
x=9 или x=−9
7
б)
x2=0x=0
8
в) x2=17
x=17 или x=−17
може се записати и x1=17 x2=−17
КОРЕН
а
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