Tuesday, August 31, 2010

Problems Factor calculator

Example Problems for factor by grouping calculator:

Problem 1:-

x3 – x2 + x -1

Solution:-

first group the first and last two terms together like,

(x3 – x2) + (x - 1)

Now we can factor out x2 fr! om the first group and 1 from the second group.

x2(x - 1) + 1(x - 1)

now we can factor out (x - 1), so

(x - 1) (x2 + 1)

Now the factors of x3 – x2 + x -1 are (x - 1) (x2 + 1)

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