1÷[(-2)的平方x0.5的平方-(-2.24)÷(-2)的3次方]-1又7/8
=1÷[4x0.25-(-2.24)÷(-8)]-1又7/8
=1÷(1-0.28)-1又7/8
=1÷0.72-1又7/8
=100/72-135/72
=-35/72
1÷[(-2)^2×0.5^2-(-2.24)÷(-2)^3]-1又7/8
=1÷[4×0.25-(-2.24)÷(-8)]-1又7/8
=1÷[1-0.28]-1又7/8
=1÷0.72-1又7/8
=1÷72/100-1又7/8
=100/72-1-63/72
=1+28/72-1-63/72
=-35/72
请采纳
如图
周