Question

How do you expand `(2x^3+1)^5`?

Answer 1

`1+10x^3+40x^6+80x^9+80x^12+32x^15`

Explanation:

Use the formula
`(a+b)^5=a^5+5a^4b+10a^3b^2+10a^2b^3+5ab^4+b^5`