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equation help

J

jasmine

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can someone please help me solve this equation??
k2 + 5k – 300 = 0.

the answers should be 15 and –20...
i just cant get it.. :x
 
A

alay

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from that equation..u get this

k^2+5k-300 =0
(k+20)(k-15) =0

k+20=0 or k-15=0
k = -20 k = 15
 
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