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McGraw Hill Integrated II, 2012

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McGraw Hill Integrated II, 2012 View details

Practice Test

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Exercise 15 Page 86

Rewrite the given expression so that it is easier to make groups.

(x+2)(4x+1)

To factor by grouping, we will take the greatest common factor of the first pair of terms and the greatest common factor of the second pair of terms.

4x^2 + 8x+x+2

Factor out 4x

4x(x+2) + x + 2

Factor out 1

4x(x+2)+1(x+2)

Notice that (x+2) is a factor of both terms, so we can factor it out.

4x(x+2)+1(x+2)

Factor out x+2

(x+2)(4x+1)

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