30(x+5)=26x+10x(x+5)
问题描述：
30(x+5)=26x+10x(x+5)
答
30(x+5)=26x+10x(x+5)30x+150=26x+10x²+50x10x²+76x-30x-150=010x²+46x-150=010(x²+4.6x)-150=010(x+2.3)²-150-52.9=010(x+2.3)²=202.9(x+2.3)²=20.29x+2.3=±√20.29x=-2.3±√...