anonymous 5 years ago 3x^2=21 What are the solutions?

1. anonymous

x= +2.64575 or -2.64575

2. anonymous

so the answer is x=2.65, -2.65?

3. anonymous

yes

4. anonymous

Divide both sides by 3, you get $$x^2=7$$, that implies that x is either $$\sqrt {7}$$ or $$-\sqrt{7}$$.

5. anonymous

thank you