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rzybert
25.05.2021 •
Mathematics
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Ответ:
we have
Let
Substitute
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side.
Rewrite as perfect squares
square root both sides
Find the solutions for the variable x
remember that
For![u=5](/tpl/images/0419/8501/05fc9.png)
For![u=-3](/tpl/images/0419/8501/3be1b.png)
therefore
the answer is the option
x = –5 and x = 3