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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?
 2 years ago
 2 years 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?
 2 years ago
 2 years 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
 2 years ago

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

pottersheep Group TitleBest ResponseYou've already chosen the best response.0
sorry where did 16 4k come from?
 2 years 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 :)
 2 years ago

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