I believe what your asking is just multiplying it together so 5p(p-3) would be 5p2-15p. the p2 is p squared or a little 2 on top of the p. Hope I helped!
P=12T
Q=66T
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Toys added to each bag:
P=12T+nT
Q=66T+nT
Therefore, 66T+nT=3(12T+nT)
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66T+nT=36T+3nT
T(66+n)=T(36+3n)
66+n=36+3n
3n-n=66-36
2n=30
Therefore, n=30/2=15
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*She added 15 toys to each bag.
A calculator can show you the answer to these very quickly.

No. of years: I have lived for 73 years. (Value: # of years)
Phase of life: At 73, I'm in my late middle age. Early childhood was a long, long time ago, as was adolescence. And so on.
Amt. of money I have is confidential. ;) Well above mininum wage!
Type of psychological functioning: healthy, constructive (as opposed to schizophrenic, illusions of grandeur, etc.)
Religious training: essentially Protestant. There is some numerical fraction implicit in "essentially."
Abstract reasoning ability: Well above average ability in this department.
These are possible answers. Take them with a grain of salt.
The method of least squares is a widely used method of fitting curve for a given data
Step-by-step explanation:
It is the most popular method used to determine the position of the trend line of a given time series. The trend line is technically called the best fit. ... The sum of the deviations of y from their corresponding trend values is zero.