Answer:
56
Step-by-step explanation:
please I'm not sure about the answer above but I'll try to solve it and help you later
7c² + 8c + 1 = 0
c = <u>-(8) +/- √((8)² - 4(7)(1))</u>
2(7)
c = <u>-8 +/- √(64 - 28)</u>
14
c = <u>-8 +/- √(36)
</u> 14
c = <u>-8 +/- 6</u>
14
c = <u>-8 + 6</u> c = <u>-8 - 6</u>
14 14
c = <u>2</u> c = <u>-14</u>
14 14
c = ¹/₇ c = 1
The solution is equal to { 1, ¹/₇}.
<u />
The sequence represented by given explicit definition is:
-4,-1,4,11,20,....
Step-by-step explanation:
We will find the terms of the sequence to find the right sequence for given explicit definition
Given explicit formula is:

We will put n=1,2,3,4,5...... in the formula
So,
Putting n=1

Putting n=2

Putting n=3

Putting n=4

so, comparing the values with given options we can conclude that
The sequence represented by given explicit definition is:
-4,-1,4,11,20,....
Keywords: Sequence, Explicit definition
Learn more about sequences at:
#LearnwithBrainly
If 'x' = -1
Your problem becomes 4(-1)3 + 2
-4(3) = -12
-12 + 2 = -10
Your answer would have to be: -10 (option B.)
⚠Just Do ⚠
P- Parentheses
E- Equation
M- Multiplication
D- Division
A- Addition
S-subtraction
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