1.

Please give simple answer forx²+y²+2xy-z²​

Answer»

+ 2xy - z² REWRITE x² + y² + 2xy - z² as ( X + y )² - z² . the DIFFERENCE of squares can be factored USING the rule a²- b² = ( a - b ) ( a + b ) ( x + y - z ) ( x + y + z )



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