Plzzz solv it fast no. v in the following image
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( x² + y² -z² )² -4x²y²
= (x² + y² -z² -2xy)(x² + y² -z² +2xy)
={(x -y)² -z² } {( x +y)² - z² }
= { (x -y -z)(x -y +z ) } { (x + y+ z )(x + y -z ) }
= (x² + y² -z² -2xy)(x² + y² -z² +2xy)
={(x -y)² -z² } {( x +y)² - z² }
= { (x -y -z)(x -y +z ) } { (x + y+ z )(x + y -z ) }
vicky211:
thakxxx ur ans is very helpful n understanding
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