Answer :
The given expression are [tex]10x^{2} -5x^{3} \\\\[/tex] and [tex]nx + ny +4x+4y[/tex]. The factors would be [tex]5x^2(2-3x)[/tex] and [tex](x+y)(n+4)[/tex].
What is factorization?
factorization is the method of breaking a number into smaller numbers that multiplied together will give that original form.
a) The given expression is
[tex]10x^{2} -5x^{3} \\\\[/tex]
by taking common factors, we get
[tex]5x^2(2-3x)[/tex]
b) The given expression is
[tex]nx + ny +4x+4y[/tex]
[tex]nx+4x+ny+4y[/tex]
by taking common factors, we get
[tex]= (x+y)(n+4)[/tex]
Learn more about factors;
https://brainly.com/question/24182713
#SPJ2