Question number 4 solve.

 We know that : (A² - B²) = (A + B)(A - B)

 (m² - n²) can be written as (m + n)(m - n)

Step-by-step explanation:

x² - y² =(x +y)(x -y)

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!