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HighlyEducated87
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Find the constant k so that the quadratic equation 2x^2 + 5x  k = 0 has two real solutions?
 2 years ago
 2 years ago
HighlyEducated87 Group Title
Find the constant k so that the quadratic equation 2x^2 + 5x  k = 0 has two real solutions?
 2 years ago
 2 years ago

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terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
Quadratic Formula!!! :D
 2 years ago

aroub Group TitleBest ResponseYou've already chosen the best response.2
First you find the delta: b^24ac 5^24(2)(k) 25+8k because it has two real solutions..so, 25+8k>0 8k>25 k>25/8
 2 years ago

HighlyEducated87 Group TitleBest ResponseYou've already chosen the best response.0
Good Job u got it 1st!!!!!
 2 years ago

terenzreignz Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{b \pm \sqrt{b^{2}4ac}}{2a}\] Yeah, as per @aroub delta (I thought it was discriminant) determines the number of roots you have, as well as their nature... Delta is that expression in the radical in the quadratic formula :D
 2 years ago

HighlyEducated87 Group TitleBest ResponseYou've already chosen the best response.0
It is discriminant but i didn't need a quadratic formula.
 2 years ago

aroub Group TitleBest ResponseYou've already chosen the best response.2
When you want to find K, no need!
 2 years ago

HighlyEducated87 Group TitleBest ResponseYou've already chosen the best response.0
i know!!! Thanks
 2 years ago
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