1.

Find the LCM of the polynomial \[{{\left( 3x+\text{ }y \right)}^{2}}-{{\left( 2x\text{ }-\text{ }y \right)}^{2}}and\text{ }{{\left( 7x\text{ }+\text{ }3y \right)}^{2}}-\text{ }{{\left( 6x\text{ }+\text{ }y \right)}^{2}}\]

A. \[5x\text{ }\left( x\text{ }+\text{ }2y \right)\text{ }\left( 13x\text{ }+\text{ }4y \right)\]
B. \[\left( 7x\text{ }+\text{ }3y \right)\text{ }\left( 2x\text{ }+\text{ }y \right)\text{ }\left( 3x\text{ }+\text{ }y \right)\]
C. \[6x\text{ }\left( 3x\text{ }+\text{ }y \right)\text{ }\left( 7x\text{ }+\text{ }3y \right)\] 
D. \[\left( 3x\text{ }+\text{ }5y \right)\text{ }\left( 2x\text{ }+\text{ }3y \right)\text{ }7x\]
E. None of these
Answer» B. \[\left( 7x\text{ }+\text{ }3y \right)\text{ }\left( 2x\text{ }+\text{ }y \right)\text{ }\left( 3x\text{ }+\text{ }y \right)\]


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