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OpenStudy (anonymous):
MULTIPLY: a^2+13a+42 2a^2-19a+9 ----------- X ----------- a^2-2a-63 a+6
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OpenStudy (anonymous):
u actually factorise each term and u'll getto see that term are cancelling...the final answer is (2a^2-19a+9)/(a-9)=2a-1
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