Answer:
<1=73
Step-by-step explanation:
All triangles add up to 180 degrees!
Add 20 and 87
20+87=107
Subtract 107 from 180
180-107=73
Hope this helps! :)
x^2+29x+210
I hope this helps! I did this through the FOIL method. :)
x+y=-2
7x-4y=8
angle DGC and angle CGB are adjacent angles
Factor −25x−25
−25x−25
=−25(x+1)
−25(x+1)