In elementary algebra, the quadratic formula is the solution of the quadratic equation.
x
=
-
b
±
b
2
-
4
a
c
2
a
" class="Wirisformula" role="math" alt="x equals fraction numerator negative b plus-or-minus square root of b squared minus 4 a c end root over denominator 2 a end fraction" style="vertical-align: -16px; height: 50px; width: 147px;">
Water is made from two elements - Hydrogen and Oxygen. If you put the two gases together, along with energy, you can make water.
2
H
2
g
+
O
2
g
⇌
2
H
2
O
l
" class="Wirisformula" role="math" alt="2 H subscript 2 open parentheses g close parentheses and O subscript 2 open parentheses g close parentheses equilibrium 2 H subscript 2 O open parentheses l close parentheses" style="vertical-align: -9px; height: 25px; width: 175px;">
The entire formula for the surface area of a cylinder is
2
πr
2
+
2
πrh
" class="Wirisformula" role="math" alt="2 πr squared plus 2 π" style="vertical-align: -4px; height: 22px; width: 84px;">