Question

25+144 squared is 13

Answer 1

squared means to the second power.

it's written like

x^2 or \[x^2\]

what it means is:
\[x \times x\]
you multiply x times itself 2 times.

so
25+144 squared would mean\[(25+144)^2\],\[169^2\cancel{ = }13\]

or you meant
square root of 144+25, which is
\[\sqrt{25+144}\]
which equals\[\sqrt{169}\]\[~~->~~~\sqrt{13^2}~~->~~~13\]