Asked by pavleen
                multiply the two binomial below
(2x-3)(2x+3)
the answer is 4x^2+9
is this correct
            
        (2x-3)(2x+3)
the answer is 4x^2+9
is this correct
Answers
                    Answered by
            Ms. Sue
            
    Did you forget -6x?
    
                    Answered by
            pavleen
            
    a) 4x^2+9
B) 4x^2-9
c) 4x^2-6x-9
d) 4x^2 -12x +9
    
B) 4x^2-9
c) 4x^2-6x-9
d) 4x^2 -12x +9
                    Answered by
            Ms. Sue
            
    So what is your choice?
    
                    Answered by
            Ms. Sue
            
    A is not correct.
Why did you throw out -3 * 2x?
    
Why did you throw out -3 * 2x?
                    Answered by
            Bosnian
            
    (2x-3)*(2x+3)=2x*(2x-3)+3*(2x-3)
=4x^2-6x+6x+9
=4x^2+9
    
=4x^2-6x+6x+9
=4x^2+9
                    Answered by
            Bosnian
            
    Sorry mistake:
(2x-3)*(2x+3)=2x*(2x-3)+3*(2x-3)
=4x^2-6x+6x-9
=4x^2-9
B is correct answer
    
(2x-3)*(2x+3)=2x*(2x-3)+3*(2x-3)
=4x^2-6x+6x-9
=4x^2-9
B is correct answer
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