Good Morning Everyone, Thank you for taking the time to answer my questions.

Please answer the following questions:

Factorise fully the following:
A) 2x+10
B) 5x-15
C) 8x+6
D) 12x-8

I will award Brainliest and please can you show your working of how you completed it.

I am awarding 20 points!

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