Answer:
2 ( a + 7)
Step-by-step explanation:
2a + 14
both 2a and 14 are divisible by 2
2a/a = a
14/2 = 7
2( a + 7) = 2a + 14
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-Chetan K
Answer:
The first is 30
Step-by-step explanation:
The third is 115
Answer:
-6
Step-by-step explanation:
Mark me as brainliest
Answer:
or 
Step-by-step explanation:
Given

Required
Solve for x using:

First, we need to identify a, b and c
The general form of a quadratic equation is:

So, by comparison with 

Substitute these values of a, b and c in




Split the expression to two
or 
To solve further in decimal form, we have
or 
or 
or 
2. 225
4. 25/36
6. 0.001
8. 8-20=-12
10. 34-16=18
12. 15/5=3^3=27
14. ?? confused...
16. 8
18. 11.5+4=15.5
20. 3(225)+10=675+10=685