Evaluate
-x\left(x+4\right)
Expand
-x^{2}-4x
Graph
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-\left(x^{2}+4x+4\right)+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+2\right)^{2}.
-x^{2}-4x-4+4
To find the opposite of x^{2}+4x+4, find the opposite of each term.
-x^{2}-4x
Add -4 and 4 to get 0.
-\left(x^{2}+4x+4\right)+4
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+2\right)^{2}.
-x^{2}-4x-4+4
To find the opposite of x^{2}+4x+4, find the opposite of each term.
-x^{2}-4x
Add -4 and 4 to get 0.
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Limits
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