The formula of an area of a square: 
a - side
We have: 
substitute:
The fromula of a perimeter of a square is: 
substitute:
You can factor out the two, so you get 2(x^2-9). You can simplify it more because it is a difference of squares, so it should be 2(x-3)(x+3)
Do your best remember volume is H+L+W and area is L*W
Use the laws of exponents to simplify the expression, then take the square root.
x^2 = 36
x = √36
x = 6
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Note that the negative square root is not a solution if you require x^(1/2) be real. If that restriction is removed, then x = -6 is also a solution.
Answer:
19 and 20
Step-by-step explanation:
Let x be the larger number
x - 1 + x = 4x - 41
We can combine like terms and isolate x:
2x - 1 = 4x - 41
2x = 40
x = 20
20 - 1 = 19
