nadapez
  • Member for 8 years, 6 months
  • Last seen more than a month ago
  • Mar del Plata, Argentina
Factorizing degree four polynomial
0 votes

Use this lemma: If x = p/q is a rational root of (an x^n + ... + a0) with a0...an integers and p and q coprimes then p divide a0 and q divide an In this problem an = 1 and a0 = 10, so x mus be in +-{...

View answer
the concept of Mathematical Induction
0 votes

You can give a first step, and if you did a step then you can make a next step. Then you can go as long as you want.

View answer
Factor out into ellipse complex numbers
0 votes

Move 8+2x2+2y2 to the RHS and square again: What if the resulting RHS is equal to -LHS for some x,y ? When both sides squared, x,y would be a solution for this equation but not for the original one. ...

View answer