已知m的2次方 m-3=0-搜答案-神马作文网

m²+m-1=0则：m²+m=1m的3次方+2m的2次方-2007=m(m²+m)+m²-2007=m+m²-2007=1-2007=-2006

|m+2|=1,m=-3,m的2次方-2+3m=-2

m²+m-1=0m²+m=1m³+2m²+2006=(m³+m²)+m²+2006=m(m²+m)+m²+20

2m^2-3m+m^（-2）=m^2+m^（-2）+m^2-3m=（m-1/m）^2+m^2-3m+2∵m²-3m-1=0显然m≠0∴m²-3m=1m-3-1/m=0即m-1/m=

3*9的m次方*27的m次方=3的21次方3*3的2m次方*3的3m次方=3的21次方3的(1+2m+3m)次方=3的21次方3的(5m+1)次方=3的21次方5m+1=215m=20m=4（-m的2

4×2^(3m)×4^(4m)=2^2×2^(3m)×2^(2×4m)=2^(2+3m+8m)=2^(11m+2)=2^9那么11m+2=911m=7m=7/11

3×9的m次方×27的m次方=3的21次方m=4（-m^2)^3/(m^3*m^2)=-m=-4

m的平方+2m-1=0,所以m^2+2m=1;m的4次方+m的3次方-3m的平方+m+2013=m^4+2m^3-m^3-3m^2+m+2013=m^4+2m^3-m^3-2m^2-m^2+m+201

8^3m*4^4m=2^92^9m*2^8m=2^92^17m=2^917m=9m=9/17

（1-m）（1+m）+（m-2）的2次方-2（m+3）的2次=1-m²+m²-4m+4-2m²-12m-18=-2m²-16m-13m²+8m-1=0

4^m*32^n=2^(2m)*2^(5n)=2^(2m+5n)=2^3=8

a的2m+1次方*a的m-1次方+a的m次幂的3次方=a的3m次方+a的3m次方=7+7=14

m²+3m+1=0m²+1=-3mm+1/m=-3(m+1/m)²=（-3）²m²+2+1/m²=9m²+1/m²=73

m`100+m`99+m`98+m`97+m`96=m`96(m`4+m`3+m`2+m+1)=m`96x0=0

9的m次方×27的m次方×81的m次方==3的2m次方×3的3m次方×3的4m次方=3的（2m+3m+4m）次方=3的9m次方所以：9m=18m=2

m^3+5m^2+3m-2012=m^3+m^2+m^2+3m^2+3m-2012=(m^3+m^2)+m^2+(3m^2+3m)-2012=m(m^2+m)+m^2+3(m^2+m)-2012因为m

m的3次方+2m的2次方-2009=m³+m²-m+m²+m-1-2008=m(m²+m-1)+(m²+m-1)-2008=0+0-2008=-200

m²+m-1=0所以m²+m=1所以原式=m³+m²+m²+2004=m(m²+m)+m²+2004=m+m²+2004

2004

m^2+1/(m^2)=(m+1/m)^2-2=3^2-2=9-2=7