x^2-8b+18=0

解方程x^2-8b+18=0

解题x^2-8b+18=0 方程

简化
x2 + -8b + 18 = 0

重新排序条件:
18 + -8b + x2 = 0

解：
18 + -8b + x2 = 0

求解变量 'b'.

移动所有含 b 的条件放右边, 其它所有条件放左边.

增加 '-18' 到方程的每一侧.
18 + -8b + -18 + x2 = 0 + -18

重新排序条件:
18 + -18 + -8b + x2 = 0 + -18

结合相似条件: 18 + -18 = 0
0 + -8b + x2 = 0 + -18
-8b + x2 = 0 + -18

结合相似条件: 0 + -18 = -18
-8b + x2 = -18

增加 '-1x2' 到方程的每一侧.
-8b + x2 + -1x2 = -18 + -1x2

结合相似条件: x2 + -1x2 = 0
-8b + 0 = -18 + -1x2
-8b = -18 + -1x2

两边除以 '-8'.
b = 2.25 + 0.125x2

简化
b = 2.25 + 0.125x2