Respuesta :

jsblumen
Given: [tex]5x^3-15x^2-140x[/tex]

Factor out a 5x: [tex]5x(x^2-3x-28)[/tex]

Find two numbers that multiply to -28 and add up to -3. In this case, -7 and 4: [tex]5x(x-7)(x+4)[/tex]
taehyung04
given <<5x^3-15x^2-140x>>
factor out everything in common
5x(x^2-3x-28)
factor polynomial within the parentheses
5x(x+4)(x-7)