Ответ:\(a^2+8a+16=(a+4)^2\).\(9x^2-6x+1=(3x-1)^2\).\(121m^2-88mn+16n^2=(11m-4n)^2\).\(24ab+36a^2+4b^2=(6a+2b)^2\).\(a^6-4a^3b+4b^2=(a^3-2b)^2\).\(25p^4+q^8+10p^2q^4=(5p^2+q^4)^2\).