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Mathematics 6 Online
OpenStudy (anonymous):

Simplify: (6x2 - 6x + 4) - (2x2 + 2x + 6) A. 8x2 - 8x - 10 B. 8x2 - 8x - 2 C. 4x2 - 8x - 2 D. 4x2 - 4x - 2

OpenStudy (nenadmatematika):

C

OpenStudy (anonymous):

first remove brackets to give 6x2 - 6x + 4 - 2x2 - 2x - 6 then simplify like terms: to give D as nenad says

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