Math, asked by kusumpakira727, 10 months ago

5x+8x+1 = 0 by quadratic formula

ZiaAzhar89: it can't be quadratic because for a quadratic the degree of variable should be 2

Answers

Answered by ShiningSilveR

hey mate here's ur answer

5x² + 8x + 1 = 0

comparing above eq. with ax²+bx+c, we get

a= 5, b= 8, c= 1

we know that

D = b² - 4ac

D = 8²- 4.5.1

D = 64 - 20

D = 44

x = (-b +- √D)/2a

x= (-8 +-√44)/2.5

x= (-8 + √44)/10, (-8 - √44)/10

if ur question is 5x + 8x + 1 = 0

then, ans will be

5x + 8x + 1 = 0

13x = -1

x= -1/13

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