a² - b² = (a - b)(a + b)the difference of two squares

one way of manipulating a² + b² which comes in handy for some applications (especally in parametrics) is this

a² + b² = (a + b)² - 2ab

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- February 6th 2006, 03:17 AM #1

- February 6th 2006, 03:48 AM #2

- February 6th 2006, 04:05 AM #3

- February 6th 2006, 04:26 AM #4