(-2)二次方-(-5)二次方×(-1)五次方+87÷(-3)×(-1)四次方等于?快
问题描述：
(-2)二次方-(-5)二次方×(-1)五次方+87÷(-3)×(-1)四次方等于?
快
答
(-2)²-(-5²)x(-1)^5+87/(-3)x(-1)^4
=4-(-25)×(-1)+87÷(-3)×1
=4-25-29
=-50
1^4-(0.5-2/3)/(1/3)x【-2-(-3)³ 】-1/8-|0.5²|
=1-(-1/6)×3×(-2+27)-(1/8)-0.25
=1-(-1/6)×3×25-(1/8)-0.25
=1+(25/2)-(1/8)-0.25
=125/8
-3²x1.2²/0.3²+(-1/3)²x(-3)³ /(-1)^2009
=-9×1.44÷0.09+(1/9)×(-27)÷(-1)
=-144+3
=-141
答
原式=4+25-29=0