因式分解:(20x-15)(7x-2)+(4x-3)(15-35x)
问题描述:
因式分解:(20x-15)(7x-2)+(4x-3)(15-35x)
答
(20x-15)(7x-2)+(4x-3)(15-35x)
=5(4x-3)(7x-2)+(4x-3)(15-35x)
=(4x-3)(35x-10)+(4x-3)(15-35x)
=(4x-3)(35x-10+15-35x)
=5(4x-3)