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Mathematics 7 Online
OpenStudy (anonymous):

Help me please! D:

OpenStudy (anonymous):

Use the squared identities to simplify 2cos^2xcos^2x A. 3-4cos(2x)-cos(4x)/4 B. 3-4cos(2x)+cos(4x)/4 C. 3+4cos(2x)+cos(4x)/4 D. 3+4cos(2x)-cos(4x)/4

OpenStudy (anonymous):

@hero

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