Monday

September 22, 2014

September 22, 2014

Posted by **Adrian** on Wednesday, November 4, 2009 at 2:23am.

x³-8x²+11x+20

- math -
**Reiny**, Wednesday, November 4, 2009 at 7:51amtry some factors of 20

I tried ±1 and sure enough -1 worked, so x+1 is a factor

Then by either long division or synthetic division of x³-8x²+11x+20 by x+1

we would get x^2 - 9x + 20

which factors again into (x-4)(x-5)

so x³-8x²+11x+20 = (x+1)x-4)(x-5)

**Answer this Question**

**Related Questions**

need help - Factor Completely (x-4(x^2+3) Perform the indicated operations (-(...

math - factor x^4-3x^3-11x^2+3x+10 completely using the factor theorem.

Algebra - Please let me know if I answered these correctly. thank you, #2. Add: ...

math ergent please - 3. Factor x^4-3x^3-11x^2+3x+10 completely using the factor ...

Math - Can somebody please explain to me how to factor trinomials that contain ...

algebra 2 - factor completely: 1. x^4 + 11x^2 - 80 2. x^2 + 12x + 36 - 9y^2 3. x...

polynomials - lol, i also have these Factor the polynomial x2 + 3x – 18. Which ...

math - I solved this problem 12x-6=11x -6+6=0 11x+6 12x=11x+6 12x-11x=x 11x-11x=...

ALGEBRA -- long division - Find each solution using long division. Show your ...

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