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Let 3x^2 +4x + c=0. What value of C  will give us exactly one solution for X?

 Jul 22, 2021

Best Answer 

 #1
avatar+18 
+1

If we want a quadratic equation to have 1 root, the discriminant must be 0.

 

so, b2 - 4ac = 0

a=3

b=4

c = ?

42 - 4(3)(c) = 0

16-12c = 0

-12c=-16

c=16/12

 

c=4/3

angelangelangel

 Jul 22, 2021
 #1
avatar+18 
+1
Best Answer

If we want a quadratic equation to have 1 root, the discriminant must be 0.

 

so, b2 - 4ac = 0

a=3

b=4

c = ?

42 - 4(3)(c) = 0

16-12c = 0

-12c=-16

c=16/12

 

c=4/3

angelangelangel

SWest Jul 22, 2021
 #2
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0

I see, thanks!

Guest Jul 22, 2021

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