Sunday

April 20, 2014

April 20, 2014

Posted by **Marilyn** on Monday, August 4, 2008 at 11:02pm.

x^4 – 625

- Math -
**Damon**, Tuesday, August 5, 2008 at 9:21amcall y = x^2 so x = +/- sqrt y

then

y^2 = 625

y = 25 or y = -25

x = sqrt 25 = +5 or -5

y = sqrt-25 = +5i or -5i

- Math -
**tchrwill**, Tuesday, August 5, 2008 at 12:44pmAny expression of the form a^2 - b^2 can be written as (a + b)(a - b).

Therefore, x^4 - 625) = (x^2 + 25)(x^2 - 25).

Then, (x^2 + 25)(x + 5)(x - 5)

**Related Questions**

Math - Rewrite the middle term as the sum of two terms and then factor ...

polynomials - lol, i also have these Factor the polynomial x2 + 3x – 18. Which ...

calculus - s=-4.9t²+245t+14.7 s=-4.9(t²-245/4.9t)+14.7 s=-4.9(t²-50t)+14.7 s=-4...

algebra 1 - Factor completely 36x2 + 60x + 25 Factor completely 4n2 + 28n + 49

math - Factor the following completely. x^2-12x+20

math - Completely factor the following expression: 16y2 – 25z2

Math - Please help with the following: Factor completely 3x^2-5x+1

math - I need help with these two problems please. Completely factor the ...

math - factor the following expression completely 75x^4+35x^3-10x^2

Math - Factor Completely the following Expression: 27X4 - 108 X2 the 4 is to the...