If the equation ax2 + 2x + a = 0 has two distinct roots, if

If the roots of given equation are distinct thend = b2 – 4ac = 0⇒ d = b2 – 4ac = 0⇒ 22 – 4(a) (a) = 0⇒ 4 – 4a2 = 0⇒ 4a2 = 4⇒ a2 = 1⇒ a = 1

Q5 of 242 Page 9

If the equation ax² + 2x + a = 0 has two distinct roots, if

If the roots of given equation are distinct then

d = b² – 4ac = 0

⇒ d = b² – 4ac = 0

⇒ 2² – 4(a) (a) = 0

⇒ 4 – 4a² = 0

⇒ 4a² = 4

⇒ a² = 1

⇒ a = 1

If the equation 9x² + 6kx + 4 = o has equal roots, then the roots are both equal to ?

If ax² + bx + c = 0 has equal roots, then c =

The positive value of k for which the equation x² + kx + 64 = 0 and x² – 8x + k = 0 will both have real roots, is

The value of is