Answer:
The required expression is [tex]4x^2-25[/tex]
Step-by-step explanation:
The difference of squares formula is given by
[tex](a+b)(a-b)=a^2-b^2[/tex]
We have been given that one factor is 2x+5. Hence, a = 2x, b = 5
It means that other factor must be (a-b) = (2x-5)
Hence, in order to find the expression, we can multiply the factors.
[tex](2x+5)(2x-5)[/tex]
Using the difference of squares formula
[tex](2x+5)(2x-5)\\\\=(2x)^2-5^2\\\\4x^2-25[/tex]
Therefore, the required expression is [tex]4x^2-25[/tex]
