SOLUTION: I need some help on these problems. I have to put them into factored form. 1. x^2+2x+9x+18 2. x^2+4x 3. x^2+2x+48 4. x^2+2x+7x+14 5. x^2+x-12 6. x^2+12x+27 Thank Y

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I need some help on these problems. I have to put them into factored form. 1. x^2+2x+9x+18 2. x^2+4x 3. x^2+2x+48 4. x^2+2x+7x+14 5. x^2+x-12 6. x^2+12x+27 Thank Y      Log On


   

Question 142431: I need some help on these problems. I have to put them into factored form.
1. x^2+2x+9x+18
2. x^2+4x
3. x^2+2x+48
4. x^2+2x+7x+14
5. x^2+x-12
6. x^2+12x+27
Thank You!!
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+2x+9x+18
x^2+11x+18
(x+9)(x+2)
---------------
x^2+4
(x+2)(x-2)
---------------
x^2+2x+48
Using the quadratic equation:x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+we get:
x=(-2+-sqrt[2^2-4*1*48])/1*2
x=(-2+-sqrt[4-192]0/2
x=(-2+-sqrt-188)/2
x=(-2+-13.7i)/2
x=(-2+13.7i)/2
x=-1+-6.85i