Our polynomial is [tex] x^{2} +3x-28[/tex]
We can tell from -28 that the binomials are one positive and one negative.
We can use a factoring chart. What adds to make +3x and multiplies to make -28. [tex]blank + blank=+3x
blank*blank=-28[/tex]
To get a negative 28, we can multiply -4 and positive seven, which add together after being multiplied by x to get +3x. Therefore, you are left with (x+7) and (x-4).
[tex](x+7)(x-4)[/tex]
