问题
填空题
已知m2+m-1=0,则m3+2m2-11=______.
答案
∵m2+m-1=0,
∴m2+m=1,
∴m3+2m2-11,
=m(m2+m)+m2-11,
=m2+m-11,
=1-11,
=-10.
故答案为:-10.
已知m2+m-1=0,则m3+2m2-11=______.
∵m2+m-1=0,
∴m2+m=1,
∴m3+2m2-11,
=m(m2+m)+m2-11,
=m2+m-11,
=1-11,
=-10.
故答案为:-10.