2x^2+bx+4=0

Solution for 2x^2+bx+4=0 equation:

Simplifying
2x2 + bx + 4 = 0

Reorder the terms:
4 + bx + 2x2 = 0

Solving
4 + bx + 2x2 = 0

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + bx + -4 + 2x2 = 0 + -4

Reorder the terms:
4 + -4 + bx + 2x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + bx + 2x2 = 0 + -4
bx + 2x2 = 0 + -4

Combine like terms: 0 + -4 = -4
bx + 2x2 = -4

Add '-2x2' to each side of the equation.
bx + 2x2 + -2x2 = -4 + -2x2

Combine like terms: 2x2 + -2x2 = 0
bx + 0 = -4 + -2x2
bx = -4 + -2x2

Divide each side by 'x'.
b = -4x-1 + -2x

Simplifying
b = -4x-1 + -2x