Question

Greatest common factor for 28y^7x^4u^3 and 8x^4u^5

Answer 1

Explanation:

`28y^(7) *x^(4) *u^(3) \\8x^(4) *u^(5)`

rewrite those 2 terms to better see what they have in common

`4*7 *x^(4) *u^(3) *y^(7) \\4*2*x^(4)*u^(3) *u^(2)`

because, 4*7 =28, 4*2=8, u³*u² =u^5, and multiplication is commutative

The greatest common factor is:

`4x^(4) u^(3)`