Ahnaf A.

asked • 09/18/15

serious problem !!!

Find the product by applying formula :

(3a-10)(3a-5)

1 Expert Answer

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Mark M. answered • 09/18/15

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If you mean FOIL
 
(3a - 10)(3a - 5)
3a(3a) + 3a(-5) + 3a(-10) + (-10)(-5)
9a2 - 15a - 30a + 50
9a2 - 45a + 50
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Ahnaf A.

what is the formula ?
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09/19/15

Mark M.

A formula is an equation relating specific values, e.g., A = length · width.
The expression given is merely a multiplication of two binomials. No formula is required not exists.
FOIL = First, Outer, Inner, Last - the four multiplications that are done to determine the product.
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09/19/15

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