Answer:
Step-by-step explanation:
Answer: 2a^2+22a+−1
Step-by-step explanation:
Let's simplify step-by-step.
2a^2−5a+(9)(3)a−1
=2a^2+−5a+27a+−1
Combine Like Terms:
=2a^2+−5a+27a+−1
=(2a^2)+(−5a+27a)+(−1)
=2a^2+22a+−1
Use an online math calculator for more accurate answers just plug in the variables
Thank you for coming to Brainly with your questions!
I believe the answer is:
93 degrees. You were correct. The interior angles all add up to 360, so you subtract each given angle to find the missing angle.
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-Belle
