Answer:
Complete code is given below:
Explanation:
addi $t0, $zero, 12 # x = 12
addi $t1, $zero, 21 # y = 21
addi $t2, $zero, 32 # z = 32
addi $t3, $zero, 3
mul $t3, $t3, $t0
mul $t3, $t3, $t0 # $t3 = 3x^2
addi $t4, $zero, 10
mul $t4, $t4, $t1 # $t4 = 10y
addi $t5, $zero, 5
mul $t5, $t5, $t2 # $t5 = 5z
add $a0, $t3, $t4
add $a0, $a0, $t5 # $a0 = 3x^2 + 10y + 5z
addi $v0, $zero, 1
syscall