Question

Find the roots of quadratic equation
2x² +4x - 4 =0 wing formula method​

Answer 1

\begin{gathered}2x + 48 - 4 = 0 \\ a = 2 \: \: \: b = 48 \: \: \: c = - 4 \\ x = - b + - \sqrt{} b {}^{2} - 4ac \div 2a \\ = - 48 + - \sqrt{}48 {}^{2} - 4 \times 2 \times - 4 \div 2 \times 2 \\= - 48 + - 56 \\ x= - 48 + 56 \: \: \: \: \: or \: x = - 48 - 56 \\ x =8 \: \: \: \: \: \: \: or \: x = - 104\end{gathered}

2x+48−4=0

a=2b=48c=−4

x=−b+−

b

2

−4ac÷2a

=−48+−

48

2

−4×2×−4÷2×2

=−48+−56

x=−48+56orx=−48−56

x=8orx=−104

Therefore,X=8 or X=-104

HOPE IT HELPS YOU DEAR..........

WITH LOVE,ARCHANA:-)

Answer 2

Step-by-step explanation:

a=2, b=4, c=-4

x=-b±root of (b²-4ac) whole divided by 2a

x=-4±root of (4²-4(2)(-4)) whole divided by 2(2)

=-4±root of (16+32) whole divided by 4

=(-4±√48)/4

=(-4±4√3)/4

=-1±√3