factors of the polynomial x^2+5x-14

Question

anonymous · Answer

To find the factors of the polynomial  x^2+5x-14, you have to factor the equation first. Use crisscross method or the australian method to do this. Do you know how to do this?

anonymous · Answer

no :(

anonymous · Answer

I cannot give you the answer right away due to the code of conduct. So the only way i can do this is to help you step by step.

anonymous · Answer

so you want to find two numbers when you add them it becomes +5 and when you multiply it becomes -14

snuggielad · Answer

Do you understand that explanation?

snuggielad · Answer

Pardon the name of the site but it explains it well... http://www.dummies.com/how-to/content/how-to-factor-a-polynomial-expression.html The answer is (x+7)(x-2) But I don't want to give it to you without explaining it. Don't forget to fan and best the answers!

anonymous · Answer

(x+7)(x-2)

snuggielad · Answer

Exactly what I said @gupta101

hero · Answer

And here's the actual explanation for it:

1. Find two numbers that add to get 5, but multiply to get -14. In other words:

a + b = 5
ab = -14

And you figure out that a = 7, b = -2 works for both. Then you perform the following steps:

x^2+5x-14
x^2 + 7x - 2x -2*7
x(x + 7) -2(x + 7)
(x + 7)(x - 2)

snuggielad · Answer

Well put hero.