Asked by Kay
                is x+3x 4x or 3x^2?
            
            
        Answers
                    Answered by
            Ms. Sue
            
    x + 3x = 4x
Try it out. Let's substitute 5 for x.
5 + (3 * 5) = 20
    
Try it out. Let's substitute 5 for x.
5 + (3 * 5) = 20
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