Math, asked by harsh396, 1 year ago

4x²+13x+15/2=0 find the equation

Answers

Answered by sunilkumar5
2
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siddhartharao77: I got x = -3/4 and x = -5/2.
harsh396: how
siddhartharao77: is it correct?
harsh396: yes
siddhartharao77: Apply Quadratic formula in it.Thats it
siddhartharao77: Now you can edit your answer Sunil
Answered by siddhartharao77
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!
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