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y = √3 and y = -3√3.
Solution :
We have Equation,
=> y² +2√3y -9 = 0.
=> y² + 3√3y -√3 -9 = 0.
=> y(y+ 3√3) -√3 (y + 3√3 ) = 0.
=> (y-√3)(y + 3√3).
Either,
=> y + 3√3 = 0.
=> y = -3√3.
Or,
=> y-√3 = 0.
=> y = √3.
Now, Let try by Quadratic Formula,
we have,
- a = 1.
- b = 2√3.
- c = -9.
Putting all given value.
Either,
Or,
Therefore, the value of y be √3 and -3√3.
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