Question

1.若-4x的m-2次方y³与2/3y的7-2n次方x³是同类项,求m²+2的n次方的值

Answer 1

同类项则x和y的指数对应相等

所以m-2=3

3=7-2n

所以m=5,n=2

m^2+2^n

=5^2+2^2

=25+4

=29