Answer:
[tex]-a^{18}[/tex]
Step-by-step explanation:
So we have [tex](-a^{3} ) ^{4} *-a^{6}[/tex]
First what we must do is do the rule of out exponent by in exponent. A.K.A in parenthesis and out parenthesis.
So [tex](-a^3) ^4[/tex]
3 * 4 = 12
[tex]a^{12}[/tex]
Now do the additive property :
[tex]-a^{12} * a^6[/tex]
12 + 6 = 18
[tex]-a^{18}[/tex]
