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Hiadamcom
25.10.2019 •
Mathematics
Which statement describes how to solve 3sqrt(x^2-6)=3sqrt(2x+2)
square both sides and then solves the resulting quadratic equations
square both sides and then solve the resulting cubic equations
cube both sides and then solve the resulting quadratic equations
cube both sides and then solve the resulting cubic equations
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Ответ:
Option 1 - Square both sides and then solves the resulting quadratic equations
Step-by-step explanation:
Given : Expression![3\sqrt{x^2-6}=3\sqrt{2x+2}](/tpl/images/0345/9815/325cf.png)
To find : Which statement describes how to solve given expression?
Solution :
The best option to solve the given expression is 'Square both sides and then solves the resulting quadratic equations'.
Now, We apply the statement to prove it.
Squaring both side,
Solving the quadratic equation,
Applying middle term split,
Therefore, The solution of the expression is x=2,-4.
Hence, Option 1 is correct.
Ответ: