解方程9﹙x-2﹚²-16﹙x+1﹚²=0
问题描述:
解方程9﹙x-2﹚²-16﹙x+1﹚²=0
答
9﹙x-2﹚²-16﹙x+1﹚²=0﹙3x-6﹚²-﹙4x+4﹚²=0﹙3x-6 + 4x + 4﹚﹙3x-6 - 4x - 4﹚=0﹙7x-2﹚﹙- x-10﹚=0﹙7x-2﹚﹙ x + 10﹚=07x-2 = 0 x = 2 /7 或者x + 10 = 0 x = -10...