Wednesday

October 22, 2014

October 22, 2014

Posted by **Sheryl** on Saturday, May 29, 2010 at 1:27am.

x^3 + ax + 3a + 3x^2

- Math 209-College Mathematics II -
**drwls**, Saturday, May 29, 2010 at 2:17amYou are in luck with this one. Two pairs of terms have x + 3 as a common factor.

x^3 + ax + 3a + 3x^2

= x^2(x + 3)+ a(x + 3)

= (x^2 + a)(x + 3)

= (x + ia)(x - ia)(x + 3)

(i is the square root of -1)

Two of the three roots are complex, for real a.

- Math 209-College Mathematics II -
**Anonymous**, Saturday, May 29, 2010 at 2:20pmX^3+ax+3a+3x^2

x^2+3x^2+ax+3a

x(x+3)+a(x+3)

(x+a)(x+3)

x= -a, x= -3

**Answer this Question**

**Related Questions**

math - I need help with these two problems please. Completely factor the ...

Math 209 - f(x) = x3 + 2x2 – 0.4X – 1 how do you you factor this?

Math 209 - f(x) = x3 + 2x2 – 0.4X – 1 how do you you factor this?

Factor completely - I am to factor this completely and I am stuck. 2r^3 + 8r^2 +...

math,correction - Can someone correct these for me plz... Problem#6 Factor. x(x-...

Math 209 - When simplifying a rational fraction, why do you need to factor the ...

college math 209 - find the values for x and y 4x - 9= -15 -3x - 4y = 22

college math 209 - solve for y, 5y^-13y=6

algebra 1 - Factor completely 36x2 + 60x + 25 Factor completely 4n2 + 28n + 49

college math 209 - simplify the following expression -(x) + 4 (4 v + 2x)