Answer:
Step-by-step explanation:
i think its 3
Answer:
x=-4.67
Step-by-step explanation:
add like terms 3-17
then take x=2x-14
add 2x to both sides
3x=-14
divide by 3 and you get your answer
Answer:
6
Step-by-step explanation:
đạo hàm cấp 2 của f(x) rồi thế 0 vào