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What is the opposite of FOIL(Math) ?
ex. x2 – 7x + 12
when you have to add to get 7 and multiply to get 12,
What is this process called?
2 Answers
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- PuzzlingLv 77 years ago
FOIL is example of distributing.
The reverse operation is factoring.
Example:
x² - 7x + 12
Split -7x into -3x and -4x:
x² - 3x - 4x + 12
Factor each pair:
x(x - 3) - 4(x - 3)
Factor out the common (x - 3)
(x - 4)(x - 3)
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