Answer: The expression after completely factorised form is
[tex]5[(x+2y^2)(x^2+4y^4-2xy^2)][/tex]
Step-by-step explanation:
Since we have given that
[tex]5x^3 + 40y^6[/tex]
We need to factorise it completely:
[tex]5x^3 + 40y^6\\\\=5(x^3+8y^6)\\\\=5((x)^3+(2y^2)^3)\\\\=5[(x+2y^2)(x^2+4y^4-2xy^2)]\ (\because\ a^3+b^3=(a+b)(a^2+b^2-ab))[/tex]
Hence, the expression after completely factorised form is
[tex]5[(x+2y^2)(x^2+4y^4-2xy^2)][/tex]