Question

(4a^3+5)^2+(4a^3-1)^2+2(4a^3+5)(4a^3-1)

Answer 1

(4a^3+5)^2+(4a^3-1)^2+2(4a^3+5)(4a^3-1)=(4a^3+5 +  4a^3-1)*2=(8a*3+4)*2=16(2a*3+1)*2

Answer 2

$(4a^3+5)^2+(4a^3-1)^2+2(4a^3+5)(4a^3-1)=(4a^3+5+4a^3-1)^2=(8a^3+4)^2=16(2a^3+1)^2$