Q. 15

Using properties of determinants, prove the following:


Answer :


R1R1 + bR3





taking common (1 + a2+ b2)



R2R2 – aR3





Taking common (1 + a2+ b2)



= (1+a2+b2 )2 (1- a2-b2 +2a2+2a2)


= (1+a2+b2 )2 (1+a2+b2 )


= (1+a2+b2 )3


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