Question

If the roots of the equation 3x×x - 4x + c = 0 are equal , then the value of c is
$x { }^{2} - 4x + y = 0$
​

Answer 1

Step-by-step explanation:

given :

• If the roots of the equation 3x×x - 4x + c = 0 are equal , then the value of c is
• $x { }^{2} - 4x + y = 0$

to find :

• then the value of c is
• $x { }^{2} - 4x + y = 0$

solution :

• 3x² - 4x + k = 0

• For equal roots

• ⇒D=0

• ⇒ (-4)² - 4(3) (k)=0 [D=0⇒ b² - 4ac =

• 0]

• ⇒16-12k = 0

• 16 = 12k

• 16/12 = k

• k = 4/3