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3x^2-12x+39=0 complete the square, and express answer in simplest form
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Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm
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Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.
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3x^2-12x+39=0 complete the square, and express answer in simplest form...
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