Question

please please solve quickly if you are genius. (x^4-4x)(x^4-4x-1)-20​

Answer 1

(x^4-4x)(x^4-4x-1)-20

x^4(x^4-4x-1)-4x(x^4-4x-1)-20

2x^8 - 4x^5 - 1x^4 - 4x^5 + 16x^2 + 4x - 20

2x^8 + 8^5 -1x^4 +16x^2+4x- 20