Final answer:
The expression (×+?)(×-?) is a quadratic expression. The equivalent expression is ((×)^2 - ?^2).
Step-by-step explanation:
The expression (×+?)(×-?) is a quadratic expression. To find an equivalent expression, we can use the difference of squares formula, which states that (a+b)(a-b) = a^2 - b^2. In this case, we can rewrite the expression as ((×)^2 - ?^2).
For example, if we have (x+3)(x-2), we can rewrite it as (x^2 - 3^2), which simplifies to x^2 - 9.
Therefore, the equivalent expression for (×+?)(×-?) is ((×)^2 - ?^2).