Given a square with side lengths represented by the function f(x)=2x+5, find the square.
a. 2x^2+10x+25
b. 4x^2+20x+25
c. 4x^2+20x+10
d. 2x^2+5x+10

Step-by-step explanation:

The length of the side:

In a square all sides have the same length.

And the area of a square is given by the formula:

so, substituting that the length is

and we solve this squared binomial with the formula:

in this case and

thus, we get:

and solving:

which is option B.

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