Question

factoring by using the difference of two squares formula
1-81z^2

Answer 1

Well, do it. \((What)^{2} = 1\) ?

Likewise. \((What)^{2} = 81z^{2}\) ?

Answer 2

don't know

Answer 3

ok you can wtite this as (1-9z)(1+9z)

Answer 4

is that fraction

Answer 5

@imfresh don't fool around please

Answer 6

@candyhuebner If you honestly cannot solve \((What)^{2} = 1\), then you cannot solve this problem and you are likely in the wrong class. I would recommend you go have a very honest and very clear discussion with your academic advisor.

Answer 7

The formula:
\[a^2-b^2 = (a-b)(a+b)\]

Answer 8

\[1 - 81z^2 = a^2 - b^2\]
a^2 = 1
b^2 = 81z^2
The opposite of squaring a number is taking its square root.
a = sqrt(1)
b = sqrt(81z^2) = sqrt(81)sqrt(z^2)