SOLUTION: Decide all values of b in the following equation that will give nore or more real number solutions. (a) 3x^2 + bx-3=0 (b) 5x^2 + bx+1=0 (c) -3x^2 + bx-3=0 (d) write a rule for

Question 50389: Decide all values of b in the following equation that will give nore or more real number solutions.
(a) 3x^2 + bx-3=0
(b) 5x^2 + bx+1=0
(c) -3x^2 + bx-3=0
(d) write a rule for judging if an expression has solutions by looking at it in standard form.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Decide all values of b in the following equation that will give nore or more real number solutions.
(a) 3x^2 + bx-3=0
b^2-4(3)(-3)>0
b^2>12
x<-sqrt12 or x>sqrt12
---------
(b) 5x^2 + bx+1=0
b^2-4(5)(1)>0
b^2>20
b<-sqrt20 or b>sqrt20
----------
(c) -3x^2 + bx-3=0
b^2-4(-3)(-3)>0
b^2>36
b<-6 or b>6
-----------------
(d) write a rule for judging if an expression has solutions by looking at it in standard form.
b^2-4ac must be >0
Cheers,
Stan H.

RELATED QUESTIONS
I am suppose to decide all values of b in the following equations that will give one or... (answered by ankor@dixie-net.com)

decide all values of b in the following equations that will give one or more real number... (answered by jim_thompson5910)

decide all values of b in the following equations that will give one or more real number... (answered by edjones)

Decide all values of b in the following equations that will give one or more real number (answered by checkley71)

how do i decide all values of b in the following equations that will give one or more... (answered by stanbon)

decide all values of b in the following equations that will give one or more real number... (answered by josmiceli)

Please help with this. Decide all values of b that will give one or more real number... (answered by fractalier)

Describe the values of b in the following equations, that will give one or more real... (answered by stanbon)

I have to find all the values of b in the following equation that will give one or more... (answered by stanbon)