Verified answer

Answer:

3x²-6x=0+9

3x²-x=9+6

x²-x=15\3

x²=5

Step-by-step explanation:

I) 3x²-6x-9=0

3x²-6x=0+9

3x²-6x=9

II) s²+10s+9=0

s²+10s=0-9

s²+10s= -9