Question

If $y^2+2\sqrt{3}y-9=0$, then $y=\sqrt{3},-3\sqrt{3}$.

• A. Yes
• B. No
• C. Ambiguous
• D. Data insufficient

Answer 1

The correct option is A Yes

Given equation is:

$y^2+2\sqrt{3}y-9=0$

By using factorisation method,

$y^2+3\sqrt{3}y-\sqrt{3}y-9=0$
$(y+3\sqrt{3})(y-\sqrt{3})=0$
$\therefore y=\sqrt{3},-3\sqrt{3}$