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(2n + 1) (n - 2) = 33
asked
Feb 19, 2018
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(2n + 1) (n - 2) = 33
Mathematics
college
DavidRR
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DavidRR
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3
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Distribute to get
2n + 1 + n - 2 = 33
Now simplify to get
3n -1 = 33
Now begin to get the variable by itself by adding 1 to 33 and getting rid of -1
3n = 34
Divide 34 by 3
34/3 = 1.3(repeating)
Amin Alaee
answered
Feb 19, 2018
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Amin Alaee
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(2n+1)(n−2)=33
−3n−2=33
subtract 33 from both sides..
−3n−2
−33
=33−33
2n2
−3n
−35
=0
factor left side of equation...
(
2n+7
)
(n−5)
=0
set factors equal to 0...
2n
+7
=
0
or
n
−5
=0
n=
or
n
=
5
Paulo Victor
answered
Feb 23, 2018
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Paulo Victor
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