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pottersheep
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Pleaseeee help, Grade 12!
If x^3  4x^2 +kx =0
what value of k would result in two equal roots?
 one year ago
 one year ago
pottersheep Group Title
Pleaseeee help, Grade 12! If x^3  4x^2 +kx =0 what value of k would result in two equal roots?
 one year ago
 one year ago

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josiahh Group TitleBest ResponseYou've already chosen the best response.2
x(x^24x+k)=0 164k=0 so k=4
 one year ago

pottersheep Group TitleBest ResponseYou've already chosen the best response.0
thank you so much
 one year ago

pottersheep Group TitleBest ResponseYou've already chosen the best response.0
sorry where did 16 4k come from?
 one year ago

josiahh Group TitleBest ResponseYou've already chosen the best response.2
bsqrt(b^24ac)... that formula. so b^24ac=4^24k. as you can see, you can factor out an x to get a quadratic equation, use the quadratic formula to solve that equation and there you go :)
 one year ago

pottersheep Group TitleBest ResponseYou've already chosen the best response.0
oooo thanks!
 one year ago
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