Question

I’m having trouble with these problems #2 and #3

Answer 1

Im not 100% sure but the answer is 25x^6+40x^3+16

Explanation:

(5^3+4)^2

(5x^{3}+4)^{2}

(5x3+4)2

(5^3+4)(5^3+4)

5(5x^3+4) *x^3+4(5x^3+4)

5(53+4)⋅3+4(53+4)+4(5x^{3}+4)

5(5x3+4)⋅x3+4(5x3+4)256+203+4(53+4)

Overall the answer is 25x^6+40x^3+16

Answer 2

2) 25x^6+40x^3+16
3)8x^3–14x^2–27x—9