Question

擅长分解因式的进（高分） x的平方-y的平方-z的平方-2yz-2x+1

Answer 1

x^2-y^2-z^2-2yz-2x+1

=(x^2-2x+1)-(y^2+2yz+z^2)

=(x-1)^2-(y+z)^2

=(x-1+y+z)(x-1-y-z)