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ticbol
Posts:
116
Registered:
1/25/05


Re: How do I do this???
Posted:
Jan 24, 2005 2:18 AM


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]*(x8.7) = [x^2 8.3x +3.9]*(x8.7) = 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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