方程(x+3)(2x-5)-(2x+1)(x-8)=41的解是_.
问题描述:
方程(x+3)(2x-5)-(2x+1)(x-8)=41的解是______.
答
2x2-5x+6x-15-(2x2-16x+x-8)=41,
2x2-5x+6x-15-2x2+16x-x+8=41,
16x-7=41,
16x=48,
x=3.
故答案为:x=3.