p2 – 4p is subtracted from p2 + p – 6 can be written as:
(p² + p – 6)-(p²– 4p)
=p²+p-6-p²+4p
=(p²-p²)+(p+4p)-6 Grouping the like terms.
=0+5p-6 Combining the like terms.
=5p-6
Now the question is to subtract p-9 from the above result 5p-6.So,
(5p-6)-(p-9)
=5p-6-p+9
=(5p-p)+(9-6)
=4p+3
Hence, the answer is 4p+3.
