Order of Operations (PEMDAS) Calculator

Calculate $$$\left(\left(\left(1 + 3\right)^{2} - 9\right) 2 + 1\right)^{2}$$$.

Add:

$$$\left(\left(\color{red}{\left(1 + 3\right)}^{2} - 9\right) 2 + 1\right)^{2} = \left(\left(\color{red}{\left(4\right)}^{2} - 9\right) 2 + 1\right)^{2}$$$

Raise to the power:

$$$\left(\left(\color{red}{\left(4^{2}\right)} - 9\right) 2 + 1\right)^{2} = \left(\left(\color{red}{\left(16\right)} - 9\right) 2 + 1\right)^{2}$$$

Subtract:

$$$\left(\color{red}{\left(16 - 9\right)} 2 + 1\right)^{2} = \left(\color{red}{\left(7\right)} 2 + 1\right)^{2}$$$

Multiply:

$$$\left(\color{red}{\left(7 \cdot 2\right)} + 1\right)^{2} = \left(\color{red}{\left(14\right)} + 1\right)^{2}$$$

Add:

$$$\color{red}{\left(14 + 1\right)}^{2} = \color{red}{\left(15\right)}^{2}$$$

Raise to the power:

$$$\color{red}{\left(15^{2}\right)} = \color{red}{\left(225\right)}$$$

The value of the expression is $$$225$$$A.