4x²+13x+15/2=0 find the equation
Answers
Answered by
2
,,,,,,,,,,,,,,,,,,,,,
Attachments:

siddhartharao77:
I got x = -3/4 and x = -5/2.
Answered by
1
Given 4x^2 + 13x + 15/2 = 0
8x^2 + 26x + 15 = 0
a = 26, b = 8 , c = 15.
We know x = -b + root b^2 - 4ac/2a
= - 26 + root 26^2 - 4 * 8 * 15/16
= - 26 + root 196/16
= -26 + 14/16
= -12/16
= -3/4 --- (1).
We know that x = -b - root b^2 - 4ac/2a
= - 26 - root 26^2 - 4 * 8 * 15/16
= -26 - 14/16
= -140/16
= -5/2 ---- (2).
From (1) and (2) : x = -3/4 and x = -5/2.
Hope this helps!
8x^2 + 26x + 15 = 0
a = 26, b = 8 , c = 15.
We know x = -b + root b^2 - 4ac/2a
= - 26 + root 26^2 - 4 * 8 * 15/16
= - 26 + root 196/16
= -26 + 14/16
= -12/16
= -3/4 --- (1).
We know that x = -b - root b^2 - 4ac/2a
= - 26 - root 26^2 - 4 * 8 * 15/16
= -26 - 14/16
= -140/16
= -5/2 ---- (2).
From (1) and (2) : x = -3/4 and x = -5/2.
Hope this helps!
Similar questions