The given expression 9x^2 - 4 is a difference of two squares.
The formula for the difference of two squares is:
a^2 - b^2 = (a - b)(a + b),
where a and b represent the terms being squared and subtracted.
We can rewrite 9x^2 - 4 as (3x)^2 - 2^2.
Using the formula for the difference of two squares, the factored form of the expression will be:
(3x - 2)(3x + 2),
which is our final answer.
9x^2-4
what is the expression in factored form
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