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OpenStudy (anonymous):
4(3c-4)-2=10c+6
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Directrix (directrix):
4(3c-4)-2=10c+6 12c - 16 - 2 = 10c + 6 12c - 18 = 10c + 6 2c = 24 c = 12
OpenStudy (anonymous):
4(3c-4)-2=10c+6 2 (3c -4) -1 = 5c + 3 6c - 8 -1 = 5c +3 c = 3 + 9 = 12
OpenStudy (anonymous):
c =12
OpenStudy (anonymous):
check: 4(3*12-4)-2=10*12+6 4(32)-2=120+6 128-2=126 TRUE
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