Question

find the roots of the quadratic equation 2 X square + X - 4 equals to zero using the quadratic formula​

Answer 1

Answer:

x= = (-1±√33)  /4

Step-by-step explanation:

2x²+x-4=0

a=2

b=1

c= -4

quadratic formula= [-b±√(b²-4ac)]/2a

                            = [-1±√1-4(2)(-4)]/2a

                            = -1±√1-(-32)/2a

                            = (-1±√33)  /4

x=(-1+√33)  /4

or  x = (-1-√33)  /4

Answer 2

Answer:

2x^2+x-4

D=b^2-4ac

=(1)^2-4×2×(-4)

=1+32

=33

root D=root 33

x= -b+-(root D)/2a

= -1+-(root33)/4

= [-1+root 33 / 4], [-1-root 33 /4] (Ans.)