Macbeth [c. 1014-August 15, 1057] first planned to kill Macduff. Then he planned to kill Macduff's entire family and household. In Act 4 Scene 1 of the Shakespearean play, Macbeth heard the warning of the crowned child against Macduff. Then he heard the warning of the bloody child against the man not born of woman. And then he heard the warning of the crowned child against the movement of Birnam Wood to Dunsinane Castle. Finally, he saw the apparition of Banquo's ghost following eight kings who held a mirror that showed an even longer royal line. What with the three warnings and the royal apparition, Macbeth decided to kill the noble Scotsman Macduff. But on his way from the witches' cavern to his royal palace at Forres, he met up with the noble Scotsman Lennox. From their conversation, he learned that Macduff had fled to England. And so Macbeth decided to have Macduff's entire family and household killed instead.
Macbeth sees the ghost of the recently murdered Banquo.
No, Lady Macbeth is not aware that Macbeth has planned the death of Banquo and Fleance.
Macbeth kills him because Banquo starts to work out that Macbeth killed dDuncan
You need to specify. There are a number of scenes between Banquo and Macbeth.
Macbeth said "Remember to pay special attention to Banquo. Show him favor with your looks and words. We're still not safe, and so we must make our honor look clean by washing it in streams of flattery. We must make our faces masks for our hearts, disguising what our hearts are."
Macbeth kills Banquo in the play and then Banquo's ghost haunts Macbeth.
Macbeth's best friend was Banquo. They fought together in battle before Macbeth's rise to power.
Macbeth kills Banquo in the play and then Banquo's ghost haunts Macbeth.
Macbeth sees the ghost of the recently murdered Banquo.
No, Lady Macbeth is not aware that Macbeth has planned the death of Banquo and Fleance.
Macbeth's soldiers do not kill Banquo, Macbeth hires three murderers to do the job.
Macbeth kills him because Banquo starts to work out that Macbeth killed dDuncan
In Act 3 of Macbeth, Macbeth becomes suspicious that Banquo poses a threat to his throne. He worries that Banquo's descendants will inherit the crown, as the witches prophesied. This suspicion leads Macbeth to plot Banquo's murder.
*Banquo. Macbeth's best friend is Banquo, but he is also Macbeth's enemy. After the meeting with the witches, Macbeth finds out that he will become the Thane of Cawdor and the King of Scotland. Eventually, he achieves both of these prophecies. Banquo, Macbeth, and Lady Macbeth are the only people that know about the witches. Banquo becomes suspicious of Macbeth because Macbeth fulfills the prophecy after King Duncan is murdered, and Macbeth acknowledges this fact. Basically, Macbeth doesn't trust Banquo.
It is not known who kills Banquo but it is Macbeth who orders for him to be murdered.
Macbeth has to convince the murderers that Banquo is evil and needs to be killed so he says that the recent famine going on at that time is Banquo's fault. The murderers are only poor men who are trying to feed their family so they believe Macbeth, and eventually kill Banquo, though Banquo's son, Fleance, escapes.
In both cases, the ghost that appears in Macbeth is summoned by the guilt and inner turmoil of Macbeth himself. The ghost of Banquo is a manifestation of Macbeth's guilt over his role in Banquo's murder, while the ghost of Lady Macbeth represents his guilt over her death and his descent into madness.