12x²+23xy-35y² 十字相乘 T T
问题描述:
12x²+23xy-35y² 十字相乘 T T
答
12x²+23xy-35y² =(12x+35y)(x-y)
答
(12x+35y)(x-y)
答
12x²+23xy-35y²
=(12x-35y)(x+y)