Saturday

February 28, 2015

February 28, 2015

Posted by **Anonymous** on Thursday, May 22, 2008 at 10:06pm.

Here's my work, but I just went around in circles.....

0 = x^4 - 6x^2 + 5

-5 = x^4 - 6x^2

-5 = x^2 (x^2 - 6)

-5 / x^2 = x^2 - 6

(-5 / x^2) + 6 = x^2

(-5 + 6x^2) / (x^2) = x^2

-5 + 6x^2 = x^2 * x^2

-5 + 6x^2 = x^4

0 - x^4 - 6x^2 + 5

- Math -
**Reiny**, Thursday, May 22, 2008 at 10:14pmNO, you have not factored anything at all

x^4 - 6x^2 + 5 = 0

(x^2 - 1)(x^2 - 5) = 0

(x-1)(x+1)x^2 - 5) = 0 if you factor over the rationals

(x-1)(x+1)x-√5)(x+√5) = 0 if you factor over the reals

- Math -
**JJ**, Saturday, February 9, 2013 at 1:11pmstart by treating the problem like it is a quadratic. Let u = x^2

u^2 - 6u + 5

Factors as: (u-5)(u-1)

(x^2 -5)(x^2 -1) =0

Whenever there is = 0, Normally, you have to solve for x and not stop at the factoring step.

Set each factor = to zero.

(x^2-5)=0 or (x^2 - 1) = 0

x^2 = 5 or x^2 = 1

x = square root of 5 divided by 2

x = minus the square root of 5 divided by 2

x = 1

x = -1

**Answer this Question**

**Related Questions**

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

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

math - 2. Simplify. Please be sure to show all of your work. -3(-9) – |-5 – 3 3...

calculus-can someone please help me with this ques - I have two questions if ...

math help!! - factor: a^2/36 - b^2/49 show all your steps please!!

Math - factor: a^2/36 - b^2/49 show all your steps please !

math ergent please please... - 10.a)Solve the inequality x^3-5x^2+2x+8<0 by i...

MATH FACTOR POLYNOMIALS - Factor the polynomial. Please show all work. x^2+2x-3

Math - Could you show me how to work through this problem? Show me steps Solve ...

Please Help Me Math - Find the sum and express in simplest form. Show all work: ...