-15x^2-16x-7=0

Simple and best practice solution for -15x^2-16x-7=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -15x^2-16x-7=0 equation: 


Simplifying
-15x2 + -16x + -7 = 0

Reorder the terms:
-7 + -16x + -15x2 = 0

Solving
-7 + -16x + -15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(7 + 16x + 15x2) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(7 + 16x + 15x2)' equal to zero and attempt to solve:

Simplifying
7 + 16x + 15x2 = 0

Solving
7 + 16x + 15x2 = 0

Begin completing the square.  Divide all terms by
15 the coefficient of the squared term: 

Divide each side by '15'.
0.4666666667 + 1.066666667x + x2 = 0

Move the constant term to the right:

Add '-0.4666666667' to each side of the equation.
0.4666666667 + 1.066666667x + -0.4666666667 + x2 = 0 + -0.4666666667

Reorder the terms:
0.4666666667 + -0.4666666667 + 1.066666667x + x2 = 0 + -0.4666666667

Combine like terms: 0.4666666667 + -0.4666666667 = 0.0000000000
0.0000000000 + 1.066666667x + x2 = 0 + -0.4666666667
1.066666667x + x2 = 0 + -0.4666666667

Combine like terms: 0 + -0.4666666667 = -0.4666666667
1.066666667x + x2 = -0.4666666667

The x term is 1.066666667x.  Take half its coefficient (0.5333333335).
Square it (0.2844444446) and add it to both sides.

Add '0.2844444446' to each side of the equation.
1.066666667x + 0.2844444446 + x2 = -0.4666666667 + 0.2844444446

Reorder the terms:
0.2844444446 + 1.066666667x + x2 = -0.4666666667 + 0.2844444446

Combine like terms: -0.4666666667 + 0.2844444446 = -0.1822222221
0.2844444446 + 1.066666667x + x2 = -0.1822222221

Factor a perfect square on the left side:
(x + 0.5333333335)(x + 0.5333333335) = -0.1822222221

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

See similar equations:

| 3k+8=-3k+32 | | 3x-9=4x+3 | | 3w+1=5w-3 | | 2m-8=-28+7m | | 4+7t=-t-84 | | 125000.00+65.00x=600000.00 | | X^4-2x^3+10x^2-18x+9=0 | | 3b+9=-3b+9 | | -2n+1=7n-71 | | 5b+5=-5+3b | | 7n-1=47+n | | 5b-3=24+2b | | -8+w=6w-23 | | 7n+6=4n+33 | | 5-7t=-t+77 | | -n+7=-3n+15 | | X-15/x=2 | | 1+3x=-6x+46 | | -7w+5=-5w-5 | | 9+2b=b+3 | | 5b+1=78-6b | | 7m+6=-5m-30 | | 3x+3+9= | | -4-3x=5x+12 | | 1+3a=-3a+31 | | 6n+8=22+4n | | -6-3b=b-26 | | -4+6n=n+41 | | -7d-3=4d-69 | | -2w+5=14-3w | | (2y+3)(5y-3x-2)= | | 21.1+-36.6= |

Equations solver categories