Verified Answer :

4x^2+ 4x – 3 = 0

Using Quadratic Formula:

x = [-4 + sqrt(16+48)]/8
or
x = [-4 - sqrt(16+48)]/8

Solving First equation:
x = [-4 + sqrt(16+48)]/8
   = -4+8/8
   = 0.5

Solving Second equation:
x = [-4 - sqrt(16+48)]/8
   = - 4 - 8 /8
   = -12/8
   = -1.5

Answer:

The values of x are

\(x=-1.5\ , 0.5\)

Step-by-step explanation:

we have

\(4x^{2}+4x-3=0\)

Group terms that contain the same variable, and move the constant to the opposite side of the equation

\(4x^{2}+4x=3\)

Factor the leading coefficient

\(4(x^{2}+x)=3\)

Complete the square. Remember to balance the equation by adding the same constants to each side.

\(4(x^{2}+x+.25)=3+1\)

\(4(x^{2}+x+.25)=4\)

\((x^{2}+x+.25)=1\)

Rewrite as perfect squares

\((x+0.5)^{2}=1\)

Square root both sides

\(x+0.5=(+/-)1\)

\(x=-0.5(+/-)1\)

\(x=-0.5+1=0.5\)

\(x=-0.5-1=-1.5\)