The qudratic equation x2
+ 15 |x| + 14 = 0 has
(A) only positive solutions (B) only negative solutions
(C) no solution (D) both positive and negative solution
aniket anand
12 Years agoGrade
2 Answers
Arun
6 Years ago
Dear Aniket
x^2 + 15 |x| + 14 = 0
on factorisation
(|x|+ 14) (|x| + 1) = 0
hence | x| = – 14 , – 1
which is not possible
hence no solution
Vikas TU
6 Years ago
The result is a negative number. The discriminant is negative, so the quadratic equation has no solution. A discriminant of zero means the equation has one solution, and it tells you nothing about direction that the graph of the parabola opens.
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