Answer:
ggggggggggggggggggggggggggggggg
Step-by-step explanation:
ggggggggggggggggggggggggggggggg
 
        
             
        
        
        
The idea is to pair up the terms, factor each sub-group, and then pull out the overall GCF to fully factor. 
x^3+5x^2-6x-30
(x^3+5x^2)+(-6x-30)
x^2(x+5)+(-6x-30)
x^2(x+5)-6(x+5)
(x^2-6)(x+5)
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Answer: (x^2-6)(x+5)
 
        
             
        
        
        
Answer: 26 gallons.
390÷15
15 can go into 39 only 2 times.
39-30 is 9
15 can go into 90 only 6 times.
90-90 is 0.
 
        
             
        
        
        
7/5y= y+2/5y
0.68y = y-0.32y
3/5y=y-2/5y
1.32y=y+0.32y
        
                    
             
        
        
        
(x² + 16)(x² - 16)
= (x²)² - 16²
= x⁴ - 256