HCU MCA 2015 Paper

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Question : 60 of 75

Marks: +1, -0

Let

\A=[\table \1, - 1; 2, 2]

and

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

. If matrices A, B satisfy

(\A+\B)^2=\A^2+2\AB+\B^2

then values of ‘a’, ‘b’ are;

$-3,-1/2$
$-3,1/2$
$3,1/2$
$3,-1/2$

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