3×﹙﹣5﹚²×¾－﹙﹣25﹚×1½－﹙3 的4次方－6﹚×﹙½﹚²好人就是你!1(⊙v⊙)嗯(∩_∩) 嘻嘻……!

3×﹙﹣5﹚²×¾－﹙﹣25﹚×1½－﹙3 的4次方－6﹚×﹙½﹚²好人就是你!1(⊙v⊙)嗯(∩_∩) 嘻嘻……!
3×﹙﹣5﹚²×¾－﹙﹣25﹚×1½－﹙3 的4次方－6﹚×﹙½﹚²
好人就是你!1(⊙v⊙)嗯(∩_∩) 嘻嘻……!

3×﹙﹣5﹚²×¾－﹙﹣25﹚×1½－﹙3 的4次方－6﹚×﹙½﹚²好人就是你!1(⊙v⊙)嗯(∩_∩) 嘻嘻……!
原式=3×25×3/4+25×3/2-75×1/4
=9/4×25+25×3/2-25×3/4
=25×(9/4+3/2-3/4)
=25×3
=75

3×﹙﹣5﹚²×¾－﹙﹣25﹚×1½－﹙3 的4次方－6﹚×﹙½﹚²
=3×25×3/4+25×3/2-（81-6）×1/4
=225/4+75/2-75/4
=75/2+75/2
=75

3×(-5)^2×3/4-(-25)×3/2-(3^4-6)×(1/2)^2
=3×25×3/4+25×3/2-75×1/4
=75×3/4-75×1/4+25×3/2
=75×1/2+37.5
=37.5+37.5
=75