Answer:

Step-by-step explanation:
When two or more quantities have the same exponents, their bases can be multiplied together.
(-6x-6)+(8x-6)
-6x-6+8x-6
2x-12
Hope this helps :)
Download connects Q&A they have the answers on there
Look ar the picture.
Your answer: 2 lines of symmetry.
Answer:
you equate the given values to 180