Expand
x^{4}+6x^{3}+21x^{2}+36x+36
Evaluate
\left(x^{2}+3x+6\right)^{2}
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x^{4}+6x^{3}+21x^{2}+36x+36
Square x^{2}+3x+6.
x^{4}+6x^{3}+21x^{2}+36x+36
Square x^{2}+3x+6.
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