Question

Factor x^3-4x^2+7x-28 by grouping. What is the resulting expression ?

Answer 1

Group the terms like so,

$x^3-4x^2+7x-28=(x^3-4x^2)+(7x-28)$

The first group has terms with a common factor of $x^2$, and the second has a common factor of 7:

$x^2(x-4)+7(x-4)$

Now both terms have a common factor of $x-4$:

$(x^2+7)(x-4)$

Answer 2

Answer: D

Step-by-step explanation: on edg