b) C = 75% - 1 1/2 + 0,5 : 4/12 - (-1/2)^2
Giải thích
c) C=75%−112+0,5:512−−122=75100−2.1+12+510:512−−1222=25.325.4−32+510.125−14=34−32+65−14=34−14−32+65=24−32+65=12−32+65=−3−12+65=−22+65=−1+65=−5+65=15
c) C=75%−112+0,5:512−−122=75100−2.1+12+510:512−−1222=25.325.4−32+510.125−14=34−32+65−14=34−14−32+65=24−32+65=12−32+65=−3−12+65=−22+65=−1+65=−5+65=15