Someone help me with this please

5x^3+17x^2−10x−15

Step-by-step explanation:

(5x+3)(x+5)(x-1)=large rectangle

(3x)(2x-1) = small rectangle

(5x+3)(x+5)(x-1) - (3x)(2x-1) = shaded area

=> simplify to 5x^3+17x^2−10x−15

e) none of the above because the measure of angle cba is 101°

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.