Question

用因式分解法解方程4（x+3)�0�5=25（x-2）�0�5

Answer 1

[2（x+3)+5（x-2）][2（x+3)-5（x-2）]=0解得x=7/4，x=4/3.

Answer 2

4（x+3)�0�5=25（x-2）�0�54（x+3)�0�5-25（x-2）�0�5=0[2(x+3)+5(x-2)]*[2(x+3)-5(x-2)]=0(7x-4)(16-2x)=0 x= 4/7 x=8

Answer 3

4（x+3)�0�5=25（x-2）�0�52(x+3)=5(x-2)3x=16x=16/3