Multiply

(x^4+6x)(x^4+6x)

I get the answer to be 2x^8+12x^10+36X^2

I think I lost something somewhere help!!!!

x^4 * x^4 = x^8, not 2x^8

6x*x^4 = 6x^5, not 6x^10 - just add exponents

So, the correct answer is x^8 + 12x^5 + 36x^2