Answer
$x^2+0x^1+9$
$9m^3+1m^2+0m^1-5$
$0a^0+0a^1+0a^2-3a^3+1a^4$
Work Step by Step
a. $x^2+9$ Write the missing power $x^1$
$x^2+0x^1+9$
b.$9m^3+m^2-5$ Write the missing power $m^1$
$9m^3+1m^2+0m^1-5$
c. $-3a^3+a^4$ Write the missing powers $a^0$,$a^1$,$a^2$
$0a^0+0a^1+0a^2-3a^3+1a^4$