This Post Has 4 Comments

1. mnkjn

   step-by-step explanation:

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2. Go through the explanation you should be able to solve them

   Step-by-step explanation:

   How do you know a difference of two square;

   Let's consider the example below;

   x^2 - 9 = ( x+ 3)( x-3); this is a difference of two square because 9 is a perfect square.

   Let's consider another example,

   2x^2 - 18

   If we divide through by 2 we have:

   2x^2/2 -18 /2 = x^2 - 9 ; which is a perfect square as shown above

   Let's take another example;

   x^6 - 64

   The above expression is the same as;

   (x^3)^2 -( 8)^2= (x^3 + 8) (x^3 -8); this is a difference of 2 square.

   Let's take another example

   a^5 - y^6 ; a^5 - (y ^3)^2

   We cannot simplify a^5 as we did for y^6; hence the expression is not a perfect square

   Lastly let's consider

   a^4 - b^4 we can simplify it as (a^2)^2 - (b^2)^2 ; which is a perfect square because it evaluates to

   (a^2 + b^2) ( a^2 - b^2)

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3. I think..

   Step-by-step explanation:

   no

   yes

   yes

   no

   Reply

4. answer:   y=2x-3

   step-by-step explanation:

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