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24-10-2017
Mathematics

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Item 2 Solve the equation using square roots. m^2+8m+16=45

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vunderkid vunderkid

24-10-2017

m²+8m+16=45
m²+8m-29=0
D=64+4*29=180
m₁=(-8+√180)/2=2.7
m₂=(-8-√180)/2=-10.7

m₁=2.7
m₂=-10.7

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