问题
填空题
x2-(p+q)x+qp=0左边因式分解为______.
答案
据十字相乘法知,
x2-(p+q)x+qp=(x-p)(x-q),
∴x2-(p+q)x+qp=0左边因式分解为:(x-p)(x-q)=0.
x2-(p+q)x+qp=0左边因式分解为______.
据十字相乘法知,
x2-(p+q)x+qp=(x-p)(x-q),
∴x2-(p+q)x+qp=0左边因式分解为:(x-p)(x-q)=0.