Solve for n (complex solution)
n\in \mathrm{C}
Solve for n
n\in \mathrm{R}
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0\left(n+2\right)^{2}=0
Multiply 0 and 5 to get 0.
0\left(n^{2}+4n+4\right)=0
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(n+2\right)^{2}.
0=0
Anything times zero gives zero.
\text{true}
Compare 0 and 0.
n\in \mathrm{C}
This is true for any n.
0\left(n+2\right)^{2}=0
Multiply 0 and 5 to get 0.
0\left(n^{2}+4n+4\right)=0
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(n+2\right)^{2}.
0=0
Anything times zero gives zero.
\text{true}
Compare 0 and 0.
n\in \mathrm{R}
This is true for any n.
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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