Question

1.化简(a^2×b^3）×（a^5×b^-2)^0÷(a^4×b^3)^2 (^代表..的平方如a^2=a的2子方)

Answer 1

利用 a^0=1,(a^n)^m= a^(n*m),a^n/a^m = a^(n-m),

(a^2*b^3)*(a^5*b^(-2))^0/(a^4*b^3)^2

=(a^2*b^3)*1/(a^8*b^6)

=a^(2-8)*b^(3-6)

=a^(-6)*b^(-3)