+118725 Or, did you mean
$$(x+7)^2=19\\\\
x+7 = \sqrt{19} \mbox{ or }x+7=-\sqrt{19}\\\\
x = \sqrt{19}-7 \mbox{ or }x=-\sqrt{19}-7\\\\$$
If this is what you meant then you should have used the superscipt button from the fromat heading to write the 2 OR you could write
(x+7)^2=19
The ^ (hat) means 'power of'. 
19 halved is 9.5.
x+7=9.5.
x is 2.5.
$$\left({\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}\right){\mathtt{\,\times\,}}{\mathtt{2}} = {\mathtt{19}} = {\mathtt{x}} = {\frac{{\mathtt{5}}}{{\mathtt{2}}}}$$
+118725 Or, did you mean
$$(x+7)^2=19\\\\
x+7 = \sqrt{19} \mbox{ or }x+7=-\sqrt{19}\\\\
x = \sqrt{19}-7 \mbox{ or }x=-\sqrt{19}-7\\\\$$
If this is what you meant then you should have used the superscipt button from the fromat heading to write the 2 OR you could write
(x+7)^2=19
The ^ (hat) means 'power of'.
