If A=[\table 1 , -1 ;2 , -1 ], B=[\table a , 1 ; b , -1 ] and ({A}+{B})^{2}={A}^{2}+{B}^{2}, then a+b=

AP ICET 17 Sep 2021 Shift 2 Paper

Question : 189 of 200

Marks: +1, -0

A=[\table 1 , -1 ;2 , -1 ], B=[\table a , 1 ; b , -1 ]

and

({A}+{B})^{2}={A}^{2}+{B}^{2}

, then

a+b=

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