4x^2-15x^2-42=0

Solution for 4x^2-15x^2-42=0 equation:

Simplifying
4x2 + -15x2 + -42 = 0

Reorder the terms:
-42 + 4x2 + -15x2 = 0

Combine like terms: 4x2 + -15x2 = -11x2
-42 + -11x2 = 0

Solving
-42 + -11x2 = 0

Solving for variable 'x'.

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

Add '42' to each side of the equation.
-42 + 42 + -11x2 = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -11x2 = 0 + 42
-11x2 = 0 + 42

Combine like terms: 0 + 42 = 42
-11x2 = 42

Divide each side by '-11'.
x2 = -3.818181818

Simplifying
x2 = -3.818181818

Reorder the terms:
3.818181818 + x2 = -3.818181818 + 3.818181818

Combine like terms: -3.818181818 + 3.818181818 = 0.000000000
3.818181818 + x2 = 0.000000000

The solution to this equation could not be determined.