Answer:
2α^2+15α+21
Step-by-step explanation:
(5α+α²-14) + (10α +α²+ 35)
Combine like terms
α^2+α^2+5α+10α-14+35
2α^2+15α+21
Answer:

Step-by-step explanation:
Given
Represent the temperature in Tucson with T and that in Minneapolis with M.
From the first statement, we have:

From the second, we have:
or
--- i.e. both are opposite numbers
Required
Find T
To calculate T, substitute -T for M in 
This gives:

Collect Like Terms


Make T the subject


Hence, the temperature in Tucson is 
Answer:
2(s + 5) = 2s + 10, not 2s - 10
2s - 10 = 2s + 10

Answer:
See below
Step-by-step explanation:
- 6x² - 18 =
- 6*x² - 6*3 =
- 6(x² - 3)