Question

5 x square + 13 x + 8 = 0 by quadratic formula ​

Answer 1

Step-by-step explanation:

5x^2 + 13x - 8 = 0

a = 5; b = 13; c = -8

x = (-b +/-sqrt(b^2 - 4ac))/2a

x = (-13 +/-sqrt(13^2 - 4(5)(-8))/2(5)

x = (-13 +/-sqrt(169 + 160))/10

x = (-13 + sqrt(329))/10 = 0.5138357147

x = (-13 - sqrt(329))/10 = -3.113835715

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Answer 2

Answer:

5xsquare+13x+8=0 comparing with

a x square+bx+c =0

we get a=5 ,b=13 , c=8

b square-4ac= (13)square - 4×5×8

= 169 - 160

= 9

x = -b+/- √b square-4ac÷2a

= -13 +/- √9 ÷ 2×5

= -13 +/- 3 ÷ 10

x= -13+3 ÷10. or. x = -13-3 ÷ 10

= -10÷10. = -16 ÷ 10

= -1. = -8/5