Answer:
x = 7, -7
Step-by-step explanation:
(2x-1)(3x+2)+x+292
3x - 2x +x = 2 - 1 + 292
(6)x - 294 = 6(x - 49)
Use communicative property of multiplication
Example: (A+B)(A-B)

49 is the square of 7
x square is the square of x to the power of 1
(x+7)(x-7)
 
        
             
        
        
        
Answer:
The reactant that acts as an acid, by contributing an H⁺ ion to create H3O+ in the chemical equation is C₆H₅OH.
Step-by-step explanation:
According to Brønstend-Lowry, an acid is a substance that transfer a proton (hydrogen cation, H⁺) to a base, forming a base conjugate for the first and an acid conjugate for the second.       
From the following reaction:
C₆H₅OH(aq) + H₂O(l)  →  C₆H₅O⁻(aq) + H₃O⁺(aq)
     
We have that the C₆H₅OH transfer a proton to the water to form its conjugate base C₆H₅O⁻ and the conjugate acid of water H₃O⁺. Hence, the C₆H₅OH is the acid and the water is the base. 
Therefore, the reactant that acts as an acid, by contributing an H⁺ ion to create H3O+ in the chemical equation is C₆H₅OH. 
I hope it helps you!
 
        
                    
             
        
        
        
Answer:
640
Step-by-step explanation:
22 x 28 = 616
4 x 6 = 24 
616 + 24 = 640 fit
 
        
             
        
        
        
9514 1404 393
Answer:
   48
Step-by-step explanation:
The Pythagorean theorem tells you the square of the hypotenuse (longest side) is the sum of the squares of the other two sides. Let x represent the unknown side.
   73² = x² +55²
   5329 = x² +3025 . . . evaluate the squares
   2304 = x² . . . . . . . . . subtract 3025 from both sides
   48 = x . . . . . . . . . . . . take the square root of both sides
The exact length of the third side is 48.