Question

4. 2x² + x - 4 = 0
find the roots ​

Answer 1

Answer:

solved

Step-by-step explanation:

4. 2x² + x - 4 = 0

x = -2 ±√ 4+67.2 ÷2

x = -2 ±√ 71.2 ÷2

x = -1 ±√ 17.8

Answer 2

EXPLANATION :

2x^2 + x – 4 = 0

here a = 2, b = 1, C = –4

now , appliying formula

$x = \frac{ - b \binom{ + }{ - } \sqrt{ {b}^{2} - 4ac } }{2a}$

$x = \frac{ - 1 \binom{ + }{ - } \sqrt{1 - 4 \times 2 \times ( - 4)} }{2}$

$x = \frac{ - 1 \binom{ + }{ - } \sqrt{33} }{2}$

$hence \: there \: will \: be \: two \: roots \\ \frac{ - 1 + \sqrt{33} }{2} \: and \: \frac{ - 1 - \sqrt{33} }{2}$

$hope \: it \: will \: help \: you..$

THNKS!!