Question

简便计算:1.(-6)^15除以(-8)^5除以(-9)^7-(-0.75)^3X(-2)^6=

Answer 1

1.原式=（-6)^15/[(-2)^(3*5)*(-3)^(2*7)]-[(-0.75)^3*（4)^3]

=-3+3^3

=24

2.原式=(-1/2)*(100^2)

=-50