SOLUTION: How do you work out this quadratic equation 256x^4-625y^4.

Question 807882: How do you work out this quadratic equation 256x^4-625y^4.
Found 2 solutions by josmiceli, richwmiller:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
It's not an equation until you make it " = " to something

Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
It is not an equation. Do you see an equal sign?
Set it to zero to make an equation.
256x^4-625y^4=0
It can be factored into three parts
(4x-5y) (4x+5y) (16x^2+25y^2)=0
set each one to zero and solve.
x=0 and y=0 is the solution to (16x^2+25y^2)=0
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