Answer:
268
Step-by-step explanation:
Answer:
x = 105
Step-by-step explanation:
the sum of all interior angles of any four-sided figure has 360 degrees
∡F and ∡H are equal
add all four expressions and set them equal to 360
x + (x + 5) +( x + 5) + (140 - x) = 360
combine like terms
2x + 150 = 360
2x = 210
x = 105
Option B is correct
Why
3x=21
3(7) =21
21=21
Step-by-step explanation:
To find the sum:

Therefore the answer is a^3+12a^2+14a+5.
Hope it helps!