01-03-2017
Mathematics

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What can be added to get -18 and multiplied to here -144? (Number nine）

What can be added to get 18 and multiplied to here 144 Number nine class=

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soooobored soooobored

01-03-2017

for number 9, start by dividing everything by 6

the result is n^2 - 3n -3 =1

solving for zero
n^2 -3n -4 =0

no idea where you got -144 from

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