P C
3 39
4 48
5 57
6 66
9(3)=27+12=39=c
9(4)=36+12=48=c
57=9p+12
-12 -12
45=9p
divide by 9 both sides 45/9=5=p
c=9(6)+12
c=54+12
c=66
        
             
        
        
        
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Depending on the value of 't' and 'u', the numerical value of that expression 
could have almost anything for factors.  
For example, if  't' happens to be 3 and 'u' happens to be 10, then  6tu = 180, 
and the factors of  6tu  are
   1,   2,   3,  4,  5,  6,  9,  10,  12,  15,  18,  20,  30,  36,  45,  60,  90, and  180.
But that would only be temporary ... only as long as  t=3  and  u=10.  
The only factors you can always count on, that don't depend on the values
of  't'  and  'u', are
           1,  6,  t,  u,  6t,  6u,  tu,  and  6tu .
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For the scale factor of 1:3. Use ratio and proportion to solve for the area of the triangle. 
area of triangle RST/ area of triangle XYZ = (1/3)^2
where
area of traianlge RST = 10.825 inch^2
Area of triangle XYZ= Area of triangle RST x (3)^2
Substitute the given values=97.4 inch^2
        
                    
             
        
        
        
Hi there!
To solve this equation, we can use distributive property.
I listed the terms you have to multiply :
x² × x² = x^4
x² × 2x = 2x³
x² × 5 = 5x²
2x × x² = 2x³
2x × 2x = 4x²
2x × 5 = 10x
-1 × x² = -x²
-1 × 2x = -2x
-1 × 5 = -5
Add all of them....
x^4 + 2x³ + 5x² +2x³ + 4x² + 10x - x² - 2x - 5
add up the like terms to simplify
x^4 + 4x³ + 8x² + 8x - 5
Hope this helped! :)