Answer:
x=6
Step-by-step explanation:

Hello,
mes QRT=3x+5=3*14+5=47°
mes TRS=10x-7=10*14-7=133°
since
3x+5+10x-7=180
==>13x=184
==>x=14(°)
Remember that polynomials are closed under addition, subtraction, and multiplication, but they are not closed under division. The only division you have there is B; therefore the correct answer is
B.
A.

. The result is still a polynomial; therefore, answer A is incorrect.
B. 
with a remainder of 26. The result is not a polynomial anymore; therefore,
B is the correct answer.
C.

. The result is still a polynomial; therefore, answer C is incorrect.
D.

. The result is still a polynomial; therefore, answer D is incorrect.
Answer:
A I think because no matter where u start they're not symmetrical