wellhellomyppl
wellhellomyppl wellhellomyppl
  • 22-06-2021
  • Mathematics
contestada

was the expression a^2-b^2 = (a+b)(a-b) invented or discovered?

was the expression a2b2 abab invented or discovered class=

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elviskiseyo5 elviskiseyo5
  • 22-06-2021

Answer:

the expression is invented

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colinspurdle colinspurdle
  • 22-06-2021
I would say it was discovered.
Expanding (a + b)(a - b)
= a(a - b) + b(a - b)
= a^2 - ab + ba - b^2
= a^2 - b^2
So factorising the difference between two squares simply reverses the equation
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