76=4x*x+3

Solution for 76=4x*x+3 equation:

Simplifying
76 = 4x * x + 3

Multiply x * x
76 = 4x2 + 3

Reorder the terms:
76 = 3 + 4x2

Solving
76 = 3 + 4x2

Solving for variable 'x'.

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

Add '-4x2' to each side of the equation.
76 + -4x2 = 3 + 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
76 + -4x2 = 3 + 0
76 + -4x2 = 3

Add '-76' to each side of the equation.
76 + -76 + -4x2 = 3 + -76

Combine like terms: 76 + -76 = 0
0 + -4x2 = 3 + -76
-4x2 = 3 + -76

Combine like terms: 3 + -76 = -73
-4x2 = -73

Divide each side by '-4'.
x2 = 18.25

Simplifying
x2 = 18.25

Take the square root of each side:
x = {-4.272001873, 4.272001873}