### Video Transcript

Find π΄ plus π΅ given π΄ is equal to five π cubed minus three π and π΅ is equal to negative six π squared plus three π .

In order to work out π΄ plus π΅, we need to add five π cubed minus three π and negative six π squared plus three π . Adding negative six π squared plus three π can be rewritten as minus six π squared plus three π .

We now need to group or collect the like terms. The only two terms with the same exponent or index of π are negative three π and positive three π . Negative three π plus three π is equal to zero. Therefore, these two terms cancel. This means that π΄ plus π΅ is equal to five π cubed minus six π squared, where π΄ was five π cubed minus three π and π΅ was negative six π squared plus three π .