Question

 If the roots of the equation ax²+bx+c=0 are equal then c is *

1 point

(a) -b/2a

(b) b/2a

(c) -b²/4a

(d) b²/4a​

Answer 1

 If the roots of the equation ax²+bx+c=0 are equal then the discriminant must be ‘0' .

Now,

★ Discriminant = b² - 4ca

So,

† b² - 4ca = 0

→ 4ca = b²

→ c = $\bold{\boxed{\frac{b²}{4a}}}$

$\Large{\colorbox{yellow}{\underline{\underline{♪Answer♪:—\:\:c \:=\:b²/4a} }}}$

Answer 2

Answer:

D

Step-by-step explanation:

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