Calyo Delphi on Nostr: npub1zdp33…2vqv8 I know of this quadratic factoring method by an alternative name!! ...
npub1zdp33shl69xr0uq3x8n5gsjykq9upycwh6nqm02c3f6x0frrn0dq42vqv8 (npub1zdp…vqv8) I know of this quadratic factoring method by an alternative name!!
It's the "tic-tac-toe" method, to me!
Draw up a tic-tac-toe board, and put the three coefficients in the top row.
The next two rows are where you start playing with factors of the quadratic and constant coefficients in the left and right columns respectively, to find two pairs of numbers that cross-multiply into two numbers in the middle that add to make the linear coefficient.
It's the "tic-tac-toe" method, to me!
Draw up a tic-tac-toe board, and put the three coefficients in the top row.
The next two rows are where you start playing with factors of the quadratic and constant coefficients in the left and right columns respectively, to find two pairs of numbers that cross-multiply into two numbers in the middle that add to make the linear coefficient.