question in the picture
w solution even if it's short
![Question In The Picture W Solution Even If Its Short class=](https://ph-static.z-dn.net/files/dd8/703d02b6459e087924231da00643103c.png)
Answer:
1.) 3x² +12x=21
3x² +12x-39
=39-6=33
-33(7)
Step-by-step explanation:
thanks