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Mathematics 13 Online
OpenStudy (anonymous):

Simplify: (2x + 3y)(5x - 3y)

OpenStudy (angela210793):

10x^2-6xy+15xy-9y^2=10x^2+9xy-9y^2

OpenStudy (anonymous):

10x^2-9y^2+9xy

OpenStudy (anonymous):

10x^2-6xy+15xy-9y^2 =>10x^2+9xy+9y^2

OpenStudy (anonymous):

ask you teacher why he or she thinks \[10x^2+9xy-9y^2\] is any simpler than \[(2x+3y)(5x-3y)\]

OpenStudy (anonymous):

:D nice one :D

OpenStudy (angela210793):

Lol :D:D

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