ctyrector
27.06.2019 •
Mathematics
If (x - 3)2 = 5, then
x=-315
ox= 3+v5
ox= 5+13
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Ответ:
x = 3 ±sqrt(5)
Step-by-step explanation:
(x - 3)^2 = 5
Take the square root of each side
Sqrt( (x - 3)^)2 =±sqrt( 5)
x-3 = ±sqrt(5)
Add 3 to each side
x-3+3 = 3 ±sqrt(5)
x = 3 ±sqrt(5)
Ответ:
7 and -5
Step-by-step explanation:
1. Factor: (x-7)(x+5)
2. Set both to zero and solve