Question

by using quadratic formula find x. 1) 3x²+5x+1 2) 9x²+x-3​

Answer 1

Given:

(1) 3x²+5x+1=0

(2) 9x²+x-3=0

To Find:

Value of x= ?

Solution:

(1) 3x²+5x+1=0

Comparing the above equation with ax²+bx+c=0

a=3 , b= 5 and c= 1

So, b²-4ac= (5) ²-4×3×1

=25-12

= 13

Now, by formula method,

x=-b±√b²-4ac/2a......{Formula}

x= -5±√13/6

x= -5-√13/6 OR -5+√13/6

(2) 9x²+x-3=0

Comparing the Above equation with ax²+bx+c=0

a=9, b= 1 and c= -3

So, b²-4ac= (1) ²-4×9×3

=1-108

=-107

Now, by formula method,

x=-b±√b²-4ac/2a

x= -1± -√107/18

x= -1 - -√107/18 or -1 + -√107/18

x= -1+√107/18 or -1 -√107/18

Answer 2

Answer:

your question's answer is 504