Area of a circle

$$\mathrm{\pi <!--\; p\; -->}<!--\; \; -->r^2$$

Quadratic Equation

$$x^2+4x+4=0$$

Quadratic Formula

$$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$$

Embedded table

$$A=\left[\begin{array}{cc}x& y\\ z& w\end{array}\right]$$

Semantics (MathML tag - with content markup annotation)

$${\int }_1^t\frac{dx}{x}$$

Polynomial Equation (with mstyle)

$${\displaystyle a{x}^2+bx+c=0}$$

Complex Equation

$$2x\times -\frac{1}{16}+{-5}^2=24⁤\frac{15}{16}$$

E Equals MC Squared in Table

$$\begin{array}{}& E=m<!--INVISIBLE\; TIMES-->c^2\end{array}$$

Broken Fences

$$\left\{\right[a+b+c)-d\}$$

Fenced 1

$$\left(a+b\right)$$

GroupAligned

$$\begin{array}{c}8.44<!--INVISIBLE\; TIMES-->x+55<!--INVISIBLE\; TIMES-->y=0\\ 3.1<!--INVISIBLE\; TIMES-->x-0.7<!--INVISIBLE\; TIMES-->y=-1.1\end{array}$$

Sine function

$$\sin x + 5$$

Enclosed

$$\overline{)x+y}$$

Cubed Root of x

$$\sqrt[3]{x}$$

Fourth Root of 64

$$\sqrt[4]{\mathrm{64}}$$

Cubed Root of x +1

$$\sqrt[3]{x}+1$$

Fifth Root of x

$$\sqrt[5]{x}$$

Minus one third Root of the quanity x plus 1