Two Perfect Squares for problem of 4x(squared) - 25

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Cowboy1

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I need help in figuring out a problem of the difference of two perfect squares for the problem of 4x(squared)-25
 
Re: Two Perfect Squares

I need help in figuring out a problem of the difference of two perfect squares for the problem of 4x(squared)-25[

aX^2 - bY^2 is the same as (aX + bY)(aX - bY)

Therefore, 4X^2 - Y^2 = ( )( )
 
Re: Two Perfect Squares

I still dont understand what you mean by 4x^2-y^2=()()
 
Re: Two Perfect Squares

4x[sup:6vkofysb]2[/sup:6vkofysb] - 25 = (2x)[sup:6vkofysb]2[/sup:6vkofysb] - 5[sup:6vkofysb]2[/sup:6vkofysb]

Now, use a[sup:6vkofysb]2[/sup:6vkofysb] - b[sup:6vkofysb]2[/sup:6vkofysb] = (a + b)(a - b)
 
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