Which expression is equivalent to: 9x²- 12x + 18
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3x

A) 3x - 4 + 6 / x
B) 3x²- 4 + 6x
C) 3x² - 4 / 3x
D) 3x - 4 + x / 6

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap