I believe Macbeth feels threatened of Banquo.
During act 4, Banquo is astonished of how the prophecy's about Macbeth have come true, and wonders if what the 3 ugly sisters (3 witches) predicted for him, will also come true - that his sons will become king. Macbeth is threatended by, this is because he wants to be king for a long as possible and then wants the position as king to pass down through generation in his family. Therefore because of this, Banquo and his son fleance is in his way/ path of what he wants and so he decides to plan h is murder.
When Duncan appoints Malcolm as Prince of Cumberland, Macbeth knows that he is setting Malcolm up to be his successor. Malcolm is, quite frankly, a wuss who has to be rescued from the battle Macbeth won by the bloody sergeant because Malcolm is such a poor warrior. There is no indication that Malcolm would make a good king, and Macbeth has every reason to believe that he would be a much better king than Malcolm. Besides, that is in the cards, if the witches are to be believed. So Macbeth is seriously annoyed with the idea that Malcolm is being groomed as the successor.
At the beginning of Act III Scene 1, suspicion.
He greets them as friends and, indeed, they are. They are heroes of his war effort and, so he thinks, loyal vassals.
There is no indication that Macbeth disliked Duncan in any way. He wasn't extraordinarily fond of him either.
glimmers of hope for his sons
very happy and he is proud of himself
bad
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
He had felt guilt
You need to specify. There are a number of scenes between Banquo and Macbeth.
Macbeth kills Banquo in the play and then Banquo's ghost haunts Macbeth.
Macbeth is involved in an external conflict with Banquo because Banquo poses a threat to Macbeth's position as king. Banquo's descendants are prophesied to inherit the throne, which leads Macbeth to see him as a rival. Macbeth's ambition and paranoia drive him to eliminate anyone who could challenge his power, including Banquo.
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.
In "Macbeth," Shakespeare uses dramatic irony to comment on Banquo's fate by having Banquo unknowingly bring up the witches' prophecy about himself and Macbeth. The audience is aware of the prophecy that Banquo's descendants will be kings, while Banquo himself remains oblivious to this and trusts Macbeth. This creates tension and highlights the contrast between Banquo's innocence and Macbeth's ambition.
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.
Macbeth doesn't confide in Banquo because he sees Banquo as a threat to his ambition. Banquo's descendants are said to be kings according to the witches' prophecy, which poses a risk to Macbeth's position as king. Macbeth becomes increasingly paranoid and seeks to eliminate anyone who might challenge his rule.
It is not known who kills Banquo but it is Macbeth who orders for him to be murdered.