$(x << y)$ - Left shifts a binary number “x” by “y”.

(^) – It is the XOR symbol.

So, it does,

$10010101$ ^ $(1<<2)$ = $10010101$^$100$ = $10010001$ = $(145)_{10}$

(^) – It is the XOR symbol.

So, it does,

$10010101$ ^ $(1<<2)$ = $10010101$^$100$ = $10010001$ = $(145)_{10}$