Expand. If necessary, combine like terms. (2x+5)(2x-5)

4x^2 - 25

Step-by-step explanation:

Here you can apply the difference of two squares formula,    (a+b)(a-b) = a^2 - b^2, such that:                      

(2x+5)(2x-5) = (2x)^2 - (5)^2

Applying the exponential rule, you receive:

(2x)^2 - (5)^2 = 2^2 * x^2 - 5^2

And simplifying, 2^2 * x^2 - 5^2 you receive:

4x^2 - 25

As simple as that!

step-by-step explanation:

$655.61 which is option c

step-by-step explanation:

price of house =   $146,000

initial rate = 3.5%

mortgaged paid in this = 3.5 % of $146,000

                                        =

                                        =$5110

the total years would be = 7

total mortgaged paid = 7 * $5110

                                      =$35770

remaining money = $146000-35770

                                =$110230

new mortgaged payment = 5 % of 110230

                                            =  

                                            =$655.61