+5478 As SckSniper stated earlier, it would certainly help if you made your question more specific.
SckSniper explained the Pythagorean Theorem, which is related to trigonometry and triangles, but good try:)
The Quadratic Formula is 
and helps solve for x with a quadratic equation in the standard form: $${{\mathtt{ax}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{bx}}{\mathtt{\,\small\textbf+\,}}{\mathtt{c}} = {\mathtt{0}}$$
You can read about it here: http://www.purplemath.com/modules/quadform.htm
+14 could you be more specific? or do you mean $${{\mathtt{a}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{b}}}^{{\mathtt{2}}} = {{\mathtt{c}}}^{{\mathtt{2}}}$$ in a rectangle, where a and b are the sides along de 90° corner, and c is the long side
+5478 As SckSniper stated earlier, it would certainly help if you made your question more specific.
SckSniper explained the Pythagorean Theorem, which is related to trigonometry and triangles, but good try:)
The Quadratic Formula is and helps solve for x with a quadratic equation in the standard form: $${{\mathtt{ax}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{bx}}{\mathtt{\,\small\textbf+\,}}{\mathtt{c}} = {\mathtt{0}}$$
You can read about it here: http://www.purplemath.com/modules/quadform.htm
