SOLUTION: Use foil method... I need help understanding this.
(x − 0.8)(x − 0.5)
Algebra.Com
Question 486784: Use foil method... I need help understanding this.
(x − 0.8)(x − 0.5)
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
In elementary algebra, FOIL is a mnemonic for the standard method of multiplying two binomials—hence the method may be referred to as the FOIL method. The word FOIL is an acronym for the four terms of the product:
First (“first” terms of each binomial are multiplied together)
Outer (“outside” terms are multiplied—that is, the first term of the first binomial and the second term of the second)
Inner (“inside” terms are multiplied—second term of the first binomial and first term of the second)
Last (“last” terms of each binomial are multiplied)
The general form is:
Note that a is both a “first” term and an “outer” term; b is both a “last” and “inner” term, and so forth.
apply this rule to your expression:
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