dondre54
28.02.2020 •
Mathematics
(X+2)²-8=17
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Ответ:
The quadratic equation has two solutions 3 and - 7.
Step-by-step explanation:
(x+2)^2 - 8=17
(x+2)^2 =17+8
(x+2)^2 =25
x+2=sqrt (25)
x+2=5 or x+2=-5
x=5-2 , x=-5-2
x=3 , x=-7
Ответ: