问题
解答题
解方程:(3x+1)(3x-1)+2(x+2)(x-2)=11(x+1)(x-3).
答案
(3x+1)(3x-1)+2(x+2)(x-2)=11(x+1)(x-3),
整理得:9x2-1+2x2-8=11x2-22x-33,
移项、合并同类项得:22x=-24,
x=-
.12 11
解方程:(3x+1)(3x-1)+2(x+2)(x-2)=11(x+1)(x-3).
(3x+1)(3x-1)+2(x+2)(x-2)=11(x+1)(x-3),
整理得:9x2-1+2x2-8=11x2-22x-33,
移项、合并同类项得:22x=-24,
x=-
.12 11