CPM Homework Help : PC3 Problem 4-21

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Home > PC3 > Chapter 4 > Lesson 4.1.1 > Problem 4-21

4-21.

Factor.

$25-49x^2$
Hint (a):
This is the difference of two perfect squares.

$x^4y^2+xy^5$
Hint (b):
Factor out the greatest common factor. Then factor again since you have a binomial with two perfect cubes.
Step (b):
$xy^{2}(x^{3} + y^3)$

$(x-1)^{7/2}-(x-1)^{3/2}$
Hint (c):
Factor out $(x−1)^{3/2}$ .
Step (c):
$(x - 1)^{3/2}\left((x - 1)^{4/2} - 1\right)$

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