Question

Help pls i dont understand this

Answer 1

Exponects easy
8×8×8×8
4×4×4
7×7

Answer 2

Remember
(ab)/c=(a)(b/c), we can split them
and
(x^m)(x^n)=x^(m+n)
and
(x^m)/(x^n)=x^(m-n)

so

(8x^4)(4x^3)/(7x^2)=
(8)(x^4)(4)(x^3)/((7)(x^2))=
(8)(4)(x^4)(x^3)/((7)(x^2))=
(32)(x^7)/((7)(x^2))=
(32/7)((x^7)/(x^2))=
(32/7)(x^5

answer is $\frac{32x^5}{7}$