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\left(\left(x^{2}\right)^{2}+2x^{2}+1\right)\left(2x+1\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x^{2}+1\right)^{2}.
\left(x^{4}+2x^{2}+1\right)\left(2x+1\right)
To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.
2x^{5}+x^{4}+4x^{3}+2x^{2}+2x+1
Use the distributive property to multiply x^{4}+2x^{2}+1 by 2x+1.
\left(\left(x^{2}\right)^{2}+2x^{2}+1\right)\left(2x+1\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x^{2}+1\right)^{2}.
\left(x^{4}+2x^{2}+1\right)\left(2x+1\right)
To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.
2x^{5}+x^{4}+4x^{3}+2x^{2}+2x+1
Use the distributive property to multiply x^{4}+2x^{2}+1 by 2x+1.