Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

If x2y2=x+yx^{2}-y^{2}=x+y, then xy=x-y=

Full solution

Q. If x2y2=x+yx^{2}-y^{2}=x+y, then xy=x-y=
  1. Recognize as difference of squares: Recognize the equation x2y2=x+yx^2 - y^2 = x + y as a difference of squares.\newlinex2y2=(x+y)(xy)x^2 - y^2 = (x + y)(x - y)
  2. Set equation: Set the equation (x+y)(xy)=x+y(x + y)(x - y) = x + y.\newlineSince x+y0x + y \neq 0 (otherwise x2y2=0x^2 - y^2 = 0, which doesn't match the original equation unless both xx and yy are zero), we can divide both sides by x+yx + y.\newlinexy=1x - y = 1

More problems from Csc, sec, and cot of special angles