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visits member for 2 years, 8 months
seen Mar 22 '12 at 5:13

Oct
10
awarded  Notable Question
Sep
15
awarded  Popular Question
Jul
22
awarded  Popular Question
Sep
21
awarded  Custodian
Mar
22
accepted Prove or disprove: if A is a subset of B and B is not a subset of C, then A is not a subset of C
Mar
22
accepted How to simplify this square $(3 \times 4 + 2)^2$?
Mar
22
accepted Can I prove (if $n^2$ is even then $n$ is even) directly?
Mar
22
accepted How does expanding $(2s+1)^2$ help us prove “$n^2$ even $\implies$ $n$ even”?
Mar
22
asked How to prove that if $A\cap B' =\varnothing$ then $A \subseteq B$?
Mar
20
awarded  Scholar
Mar
20
awarded  Student
Mar
20
asked Prove or disprove: if A is a subset of B and B is not a subset of C, then A is not a subset of C
Mar
12
reviewed Approve suggested edit on Can I prove (if $n^2$ is even then $n$ is even) directly?
Mar
12
asked Can I prove (if $n^2$ is even then $n$ is even) directly?
Mar
12
comment How to simplify this square $(3 \times 4 + 2)^2$?
I want a rule for $(2s + 1)^2$, too
Mar
12
asked How to simplify this square $(3 \times 4 + 2)^2$?
Mar
12
comment How does expanding $(2s+1)^2$ help us prove “$n^2$ even $\implies$ $n$ even”?
@Lazar : I think I asked incorrectly, How to solve the square with the variable s? $(2s+1)^2$ step by step because I am confused from where did the 4s came?
Mar
12
awarded  Editor
Mar
12
comment How does expanding $(2s+1)^2$ help us prove “$n^2$ even $\implies$ $n$ even”?
OK, But I am asking about the square: $n^2=(2s+1)^2$ $n^2=2s^2+4s+1$
Mar
12
revised How does expanding $(2s+1)^2$ help us prove “$n^2$ even $\implies$ $n$ even”?
added 15 characters in body