Answer:
 
Step-by-step explanation:
 You have the following quadratic equation given in the problem:
 
 You must make the equation equal to zero, as following:
 
 Add like terms:
  
 Now, to factor the equation, you must find two numbers whose sum is -2 and whose product is -15. Therefore, you have:
 
 
 
 
 
 
        
                    
             
        
        
        
Length=3width-5
(2(x))+(2(3x-5)=46
2x+6x+10=46
8x=56
x=7
width=7 length=16
        
             
        
        
        
Answer:
y = 4
Step-by-step explanation:
8(y+4)-2(y-1)=70-3y
8y+32-2y+2=70-3y
Grouping of like terms
8y-2y+3y=70-32-2
9y=36
Divide both sides by 9
9y/9 = 36/9
9 cancels itself and 9.
y=36/9
y=4
Therefore, y = 4.
Hope it helps.
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