Question

若m的平方加m减1等于0 求m的立方加2乘m的平方加2002的值

Answer 1

m^2 + m - 1 = 0

m^2 + m = 1

m^3 + 2m^2 + 2002

= m(m^2 + m) + m^2 + 2002

= m + m^2 + 2002

= 2003