austinross363
30.06.2019 •
Mathematics
(x - 2) ^2 - 3=12 solve by square roots
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Ответ:
X = 2+ sqrt(15)
X = 2- sqrt(15)
Step-by-step explanation:
(X - 2) ^2 - 3=12
add 3 to each side
(X - 2) ^2 - 3+3=12+3
(X - 2) ^2 =15
take the square root of each side
sqrt((X - 2) ^2) =+-sqrt(15)
(X-2) = +- sqrt(15)
add 2 to each side
X-2+2 = 2+- sqrt(15)
X = 2+- sqrt(15)
Ответ:
The answer is
25-18÷(3×2)=22