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Algebra · Expanding

Expand (a - b)·(a + b)

\left(a + b\right) \left(a - b\right)

Step by step

  1. \left(a - b\right) \left(a + b\right)

    Start from the expression.

  2. a^{2} - b^{2}

    Distribute (multiply out) the products.

Reveal the answer
a^{2} - b^{2}