Algebra-1

To expand and simplify (3xy − 4) (3xy + 4), we can use the formula for multiplying binomials:

(a + b)(a - b) = a² - b²

In this case, a is 3xy and b is 4. Substituting these values into the formula, we get:

(3xy − 4) (3xy + 4) = (3xy)² - (4)²
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