Question

同底数幂的乘法；c·c^11,10^4·10^2·10,（-b）^3·（-b）^2,-b^3·b^2,

Answer 1

同底数幂相乘底数不变,指数相加

c×c^11=c^(1+11)

=c^12

10^4×10²×10=10^(4+2+1)

=10^7

(-b)³×(-b)²=(-b)^(3+2)

=(-b)^5

=(-1×b)^5

=(-1)^5×b^5

=-b^5

-b³×b²=-1×b³×b²

=-1×b^(3+2)

=-b^5

x^(m-1)×x^(m+1)=x^(m-1+m+1)

=x^2m

a×a³×a^n=a^(1+3+n)

=a^(n+4)