Posted by **Hannah** on Thursday, September 9, 2010 at 5:08pm.

Factor completely. If the polynomial cannot be factored say it is prime.

1) 15x^3 + 19x^2 + 6x

A) (3x^2 +2)(5x+3)

B) x(3x+2)(5x+3)

C) x^2(3x+2)(5x+3)

D) x(5x+2)(3x+3)

E) Prime

I chose E) Prime.

2) 2x^2 - 14x - 6x + 42

A) 2(x+7)(x+3)

B) (x+7)(2x-6)

C) 2(x-7)(x-3)

D) (x-7)(x-3)

E) Prime

I know that this is 2x^2 - 20 + 42 when you combine the 14x and 6x so I chose answer E) Prime but I am not sure for this one.

- Math(Please check answers) -
**Reiny**, Thursday, September 9, 2010 at 6:16pm
1. Why don't you expand A) and see what you get?

2.

2x^2 - 14x - 6x + 42

= 2x(x-7) - 6(x-7)

= (x-7)(2x-6)

= 2(x-7)(x-3)

- Math(Please check answers) -
**Dennis**, Thursday, June 4, 2015 at 12:21pm
Just like what Reiny said, just try and expand it yourself. See what you can find! :)

## Answer This Question

## Related Questions

- Algebra Please check answers - Could you please check these answers thanks. ...
- Factoring and Prime - I am still having troulbe with these. Her is another one I...
- algebra - Use the discriminant to find out whether this quadratic polynomial can...
- MATH 101 - Factor completely. Be sure to factor out the greatest common factor ...
- Algebra - I need help trying to put the correct vocabulary words when solving ...
- math - Factor each polynomial completely, if a polynomial is prime say so 9x^2+...
- Algebra - What is 9x^2 +4x^2 Factor each polynomial completely. If a polynomial ...
- Algebra - I need help trying to put the correct vocabulary words when solving ...
- math - Factor each polynomial, if possible. If the polynomial cannot be factored...
- Algebra - Factor completely. Remember to look first for a common factor. Check ...

More Related Questions