Normally you would only solve by completing the square if a is 1 and b is even. But the answer would be half of b. So half of 9 is 4.5 or 4(1/2).
This basically says all the steps ! If you have any questions just tell me :)
Answer:
no to both questions, they might numb your gums but im not 100% sure.
Step-by-step explanation: