问题
填空题
已知m2+m-2=0,则代数式m3+3m2+2000的值为______.
答案
∵m2+m-2=0,
∴m2+m=2,
∴m3+3m2+2000
=m3+m2+2m2+2000
=m(m2+m)+2m2+2000
=2m+2m2+2000
=4+2000,
=2004.
故答案为:2004.
已知m2+m-2=0,则代数式m3+3m2+2000的值为______.
∵m2+m-2=0,
∴m2+m=2,
∴m3+3m2+2000
=m3+m2+2m2+2000
=m(m2+m)+2m2+2000
=2m+2m2+2000
=4+2000,
=2004.
故答案为:2004.