seven square times the cubic of nine plus *Capital A equals to the negative second power of **small b minus two third.two third - 三分之二negative second power = 负二次方 -上文中，"negative second power of **small b minus two third"就有negative second power of (small b minus two third)的意思了*Capital A = 大写A**small b = 小写 b9^...
七的平方乘以括号九加大A括号的三次方等于括号小b减去三分之二括号的负二次方 seven square multiplies/times the cube of the sum of nine plus A (which) is equal to (equals to) the negative/minus square of the differen...
