Sunday

March 1, 2015

March 1, 2015

Posted by **jen** on Sunday, April 11, 2010 at 2:36pm.

x^2+2x-4=0

When i try to factor this problem out I cant get it to work. Is this a no solution problem

- math -
**Reiny**, Sunday, April 11, 2010 at 2:41pmI hope you are not under the impression that every quadratic can be factored with rationals.

In this case I would complete the square,

x^2 + 2x + ... = 4

x^2 + 2x + 1 = 4+1

(x+1)^2 = 5

x+1 = ±√5

x = -1 ±√5

the same answer one would get if using the quadratic equation.

If the coefficient of the x^2 term is 1 and the middle term is even, I always use the "completing the square" method, it gives me the answer in simplified terms. The quadratic formula answers requires simplification.

**Answer this Question**

**Related Questions**

help with solving - x^2+(x-2)^2 = (2x-6)^2 solve for x. thanks so much. Please ...

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

More Math 2 See If You Can Help Me... :) - Problem: a^2-9 a^2-3a...

Calculus (Please check my work!) - Suppose that y = f(x) = x^2 - 4x + 4. Then on...

Algebra Zero Product Rule - I'm working with the zero product rule and I've ...

English - 1. He can not solve the math problem. 2. He cannot solve the math ...

Management Accounting - well i try to solve this problem but it look so ...

Algebra - Solve by substitution or elimination method: 4x – 5y = 14 -12x + 15y...

Algenra - How do I work this problem, it is not a homework problem but a problem...

Algebra - How do I work this problem, it is not a homework problem but a problem...