Answer:
Sorry i don't speak Vietnam so i can't help you if you write it in English i will have a chance to help you
The roots would be x=-5 and x=-4 but with that website you just do -5 and -4
Answer:
12
Step-by-step explanation:
You set up cross multiplication 3/4 x 9/x, you go 4x9=36 divided by 3 equals 12
The first one is b=75the second one is c= 15Hope this helps!