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Mathematics
Shawn Spence
5 January, 18:17
What is the relationship between "2ab and a+b"
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Pace
5 January, 20:35
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A2 - b2 = (a+b) (a-b) is indeed true.
First let's look at this numerically. At least for an initial level of verification. Let's take for example a = 9, and b = 4.
92 - 42 = 81 - 16 = 65 or putting it into the terms we'd like to use: a2 = 81 (with a=9) and b2 = 16 (with b=4) and finally (9 + 4) (9 - 4) = 13 * 5 = 65! WOW! It really works! Try it out with several other numerical examples.
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