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anonymous
 5 years ago
find the largest value of k in the equation kx^2 5x+3=0 that will make its roots real
anonymous
 5 years ago
find the largest value of k in the equation kx^2 5x+3=0 that will make its roots real

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0im pretty sure the answer is 2, but i need to show proper work and i usd guess and check which will not earn me credit. any other ways to figure it out?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Use the quadratic formula.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\Delta = b^2  4.a.c\] \[\Delta = 25  12k\] If we want real roots, \[\Delta \ge 0\] So: \[2512k \ge 0 => k \le 25/12\]
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