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Topic: How do I do this???
Replies: 3   Last Post: Jan 24, 2005 2:19 AM

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Posts: 116
Registered: 1/25/05
Re: How do I do this???
Posted: Jan 24, 2005 2:18 AM
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Here is one way.

There are 3 groups. First multiply any two groups. Then multiply the
product to the third group.
Like a*b*c = ab*c = abc

(x - .5) (x - 7.8) (x - 8.7)

= [(x - 0.5)* (x - 7.8)]* (x - 8.7)
= [x^2 -7.8x -0.5x +3.9]*(x-8.7)
= [x^2 -8.3x +3.9]*(x-8.7)
= x^3 -8.7x^2 -8.3x^2 +72.21x +3.9x -33.93
= x^3 -17x^2 +76.11x -33.93 ----answer.

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