Sunday

April 20, 2014

April 20, 2014

Posted by **thethe** on Sunday, August 25, 2013 at 1:54pm.

this should be easy, but I'm not quite getting it

- algebra -
**allie**, Sunday, August 25, 2013 at 3:08pmIt's a difference of two squares. It'll be (x+sqrt(4)) and (x-(sqrt(4)), for example---replacing 4 with whatever number is being subtracted from x squared.

That one is (x-2)(x+2).

Another example:

x^2-16 = (x-4)(x+4)

You can even do this:

x^4-16 = (x^2-4)(x^2+4)

- algebra -
**thethe**, Sunday, August 25, 2013 at 6:03pmNo. I figured it out and it is an imaginary number. Try foiling what u said. It doesn't work.

**Related Questions**

Algebra 1 - How to factor 10k^2+35k+15 completely? I would start with the easy: ...

math - how would you simplify y= (x^5-32)/(x-2)? I know that it would equal (x^5...

algebra 1 - how do you factor 16x^4 - 40x^2 + 9 I don't understand how the ...

Algebra - Help me factor this it's so easy I am not getting it figured out! 8x^2...

algebra - .2x^2 + .31x - 0.15 = 0 I dont see an easy factor here, Recommend the ...

Algebra - solving linear equations with 3 variables 1) x+y=1300 2) x+2z=1400 3) ...

Chemistry - I Have Two Questions 1)How would you calculate the number of ...

Algebra 2 - If P(x) is a polynomial in x for which P(3)=0, then..? a) x-3 is a ...

Algebra - Factor out the greatest common factor simply the factor if possible. ...

Algebra - Factor at the greatest common factor from the expression. Can someone ...