Which of the following represents this function written in standard form?

y=2(x+1)(x-6)

a. y=3x^2-10x-12
b. y=2x^2-10x+6
c. y=2x^2-5x-12
d. y=2x^2-14x+12
which of the following represents this function written in standard form?

y=2(x+1)(x-6)

a. y=3x^2-10x-12
b. y=2x^2-10x+6
c. y=2x^2-5x-12
d. y=2x^2-14x+12

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