Today is more practice in factoring polynomials with two more rules to learn: divisibility rules for and , and also how to abstract those rules to higher powers of a and b.

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10. here you need to recognize that 8 is 2 cubed and 27 is 3 cubed and then it all can be treated as x cubed minus y cubed and your can apply the general formula from lesson 88

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these last few problems require a bit of thinking power and some long division, but other than that they are not hard.