Question 387167
 show the foil method
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Here's the pattern:
(a+b)(c+d)
F: ac (the F means "first time first"
O: ad (the O means "multiply the outers"
I: bc (the I means "multiply the inners"
L: bd (the L means "last times last"
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Example:
(x + 3)(2x- 5)
F: x*2x = 2x^2
O: x*-5 = -5x
I: 3*2x = 6x
L: 3*-5 = -15
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Combines those to get the answer:
2x^2+x-15
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Cheers,
Stan H.