SOLUTION: For the equation x2 + 3x + j = 0, find all the values of j such that the equation has two real number solutions. Show your work.
Algebra.Com
Question 701571: For the equation x2 + 3x + j = 0, find all the values of j such that the equation has two real number solutions. Show your work.
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Assume you mean . Either know what is the discriminant, or try filling in solution to quadratic equation.
Notice if you want only Real solutions, then the square root's radicand must be positive. . Only a simple matter to find j.
-4j>=-9
j<=(9/4) [multiplied both sides by -(1/4)]
RELATED QUESTIONS
Find all values of j for which the quadratic equation has no real solutions.... (answered by stanbon)
Find all values of
h
for which the quadratic equation has two real solutions.... (answered by Fombitz)
Find the values of b such that the equation below always gives real solutions.
-3x^2 +... (answered by ikleyn)
Find all values of h for which for which the quadratic equation has two real solutions
(answered by josgarithmetic)
Find all values of h for which the quadratic equation has two real solutions. 3x^2+7x... (answered by greenestamps,ikleyn,Alan3354,MathTherapy)
f(x) = x2 - kx + 9, where k is a constant
find the set of values of k for which the... (answered by venugopalramana)
The question is:
Find the values of a for which the equation has two real-number... (answered by stanbon)
Find all values of c such that the equation 39 x2 + 49 x + c = 0 has exactly one... (answered by LinnW)
Find all real values of b such that the equation: x^2 + bx + 6b = 0
only has integer... (answered by MathLover1)