there is a common factor of 7x

7x(2x^2 - 3)

8x^2 - 4x = 4x(2x - 1)

36w^3 - 9w) = 9w(4w^2 - 1) = 9w(2w + 1)(2w - 1)

Check by multiplying.

Read your textbook. Practice. See your teacher---these were very easy !

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