Answer:
The set of solution is {-9,-4}
Step-by-step explanation:
* We use this result: A.B=0 , that means A=0 or B=0.
* (x+9)(x+4)=0, then x+9=0 or x= - 9
Or x+4=0, x= - 4.
This equation has 2 solutions: - 9 and - 4.
Hope that useful for you.
0,0 which is the origin.
Answer:77 and 87
7×6=42 + 5+7=35/\ 35+42=77(first outcome)
7×6=42 + 5×9=45/\42+45=87 (second outcome.
21. P=118
21. Q=142
22. P=120
22. R=60
22. S=60
