Answer:
[tex]x^6+12x^4+48x^2+64[/tex]
Step-by-step explanation:
[tex](x^2+4)^{3}\\(x^2+4)*(x^2+4)*(x^2+4)\\(x^2+4)(x^{4}+8x^{2}+16)\\(x^2)(x^{4})+(x^2)(8x^{2})+(x^2)(16)+(4x)(x^{4})+(4)(8x^{2})+(4)(16)\\x^6+8x^{4}+16x^2+4x^4+32x^2+64\\x^6+12x^4+48x^2+64[/tex]
