-4(3x^2)+15+(-4)=-25

Solution for -4(3x^2)+15+(-4)=-25 equation:

Simplifying
-4(3x2) + 15 + (-4) = -25

Remove parenthesis around (3x2)
-4 * 3x2 + 15 + (-4) = -25

Multiply -4 * 3
-12x2 + 15 + (-4) = -25
-12x2 + 15 + -4 = -25

Reorder the terms:
15 + -4 + -12x2 = -25

Combine like terms: 15 + -4 = 11
11 + -12x2 = -25

Solving
11 + -12x2 = -25

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + -12x2 = -25 + -11

Combine like terms: 11 + -11 = 0
0 + -12x2 = -25 + -11
-12x2 = -25 + -11

Combine like terms: -25 + -11 = -36
-12x2 = -36

Divide each side by '-12'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}