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jayda
Group Title
Evaluate the discriminant of 25x2 + 350x + 49 = 0. Tell how many solutions the equation has and whether the solutions are real or imaginary.
A.
one real solution
B.
two imaginary solutions
C.
two real solutions
D.
cannot be determined
 one year ago
 one year ago
jayda Group Title
Evaluate the discriminant of 25x2 + 350x + 49 = 0. Tell how many solutions the equation has and whether the solutions are real or imaginary. A. one real solution B. two imaginary solutions C. two real solutions D. cannot be determined
 one year ago
 one year ago

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NotTim Group TitleBest ResponseYou've already chosen the best response.1
wat u think first
 one year ago

jayda Group TitleBest ResponseYou've already chosen the best response.0
i honestly dont have a clue! ha
 one year ago

NotTim Group TitleBest ResponseYou've already chosen the best response.1
oh shoot i forgot too. wats discriminant
 one year ago

jayda Group TitleBest ResponseYou've already chosen the best response.0
i really dont know
 one year ago

binarymimic Group TitleBest ResponseYou've already chosen the best response.0
\[x = \frac{ b \pm \sqrt{b^{2}  4ac} }{ 2a }\] the discriminant is \[\sqrt{b^{2}  4ac}\] because it can be used to discriminate between solutions.
 one year ago

NotTim Group TitleBest ResponseYou've already chosen the best response.1
oh. that's relatively simple then. Here's a hint: ax^2bxc=0 (minus sign is just there; it doesn't matter). works in conjunction with binarymimic's comment.
 one year ago

AccessDenied Group TitleBest ResponseYou've already chosen the best response.0
The discriminant is actually a bit simpler, it's the radicand of that expression: \(b^2  4ac\) It is useful because the sign on it tells us whether there is a positive number or negative number under the radical. In the case of a positive, we have two real roots. In the case of a negative, we have two imaginary / complex roots. If we have 0, then we have a single root that is repeated. ((b + 0) / (2a))
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Actually, the discriminant is just \(b^2  4ac\).
 one year ago
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