Question

if b square - 4ac = 0 then value of x is​

Answer 1

Answer:

Step-by-step explanation:

6a=6a, equals, 6

b=10b=10b, equals, 10

c=-1c=−1c, equals, minus, 1

Plugging these values into the discriminant, we get:

\begin{aligned} &b^2-4ac\\\\ =&10^2-4(6)(-1)\\\\ =&100+24\\\\ =&124 \end{aligned}  

=

=

=

​  

 

b  

2

−4ac

10  

2

−4(6)(−1)

100+24

124

​  

 

Answer 2

ANSWER

for a quadratic equation

ax^2 + bx +c = 0

value of x given by

x = -b + √ ( b^2 -4ac ) / 2a

since

b^2 -4ac = 0

so

x = -b/2a

we know n degree equation has at most n roots

so quadratic equation has equal roots

and these are x = -b/2a, -b/2a