Question

3x^3-5x^2y+xy^2+y^3

3x^2-5x^2+xy^2+y^3因式分解
出错了。正确是：3x^2-5x^2y+xy^2+y^3

Answer 1

3x²-5x²+xy²+y³
=-2x²+(x+y)y²
=(x+y)y²-2x²
=(y√x+y+√2x)(y√x+y-√2x) .