squaring both sides of the equation: 2^2 =P+3
First, add the sqrt part to both sides and subtract 5 from both sides to get 2 = sqrt(P+3)
Then square both sides which cancels out the sqrt on the right, and makes the 2 become 4: 4 = P+3
Then subtract 3 from both sides and you have it.
If you divide by -1 then
then square both sides.
7 - sqrt(P+3)=5
- sqrt(P+3)= -2 x -1
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