SOLUTION: How would I solve the question: 16x^2-25? Thank You.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: How would I solve the question: 16x^2-25? Thank You.      Log On


   

Question 285442: How would I solve the question: 16x^2-25?
Thank You.
Found 2 solutions by user_dude2008, josmiceli:
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
difference of squares: 16x^2-25 = (4x+5)(4x-5)

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
16x%5E2+-+25
I'm not sure what the question is, but
if it's "find the roots", then
16x%5E2+-+25+=+0
16x%5E2+=+25
x%5E2+=+25%2F16
x%5E2+=+5%5E2%2F4%5E2
x%5E2+=+%285%2F4%29%5E2
Take the square root of both sides
x+=+5%2F4
and also
x+=+-%285%2F4%29