15x^2-7x+8=0

Simple and best practice solution for 15x^2-7x+8=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^2-7x+8=0 equation:


Simplifying
15x2 + -7x + 8 = 0

Reorder the terms:
8 + -7x + 15x2 = 0

Solving
8 + -7x + 15x2 = 0

Solving for variable 'x'.

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

Divide each side by '15'.
0.5333333333 + -0.4666666667x + x2 = 0

Move the constant term to the right:

Add '-0.5333333333' to each side of the equation.
0.5333333333 + -0.4666666667x + -0.5333333333 + x2 = 0 + -0.5333333333

Reorder the terms:
0.5333333333 + -0.5333333333 + -0.4666666667x + x2 = 0 + -0.5333333333

Combine like terms: 0.5333333333 + -0.5333333333 = 0.0000000000
0.0000000000 + -0.4666666667x + x2 = 0 + -0.5333333333
-0.4666666667x + x2 = 0 + -0.5333333333

Combine like terms: 0 + -0.5333333333 = -0.5333333333
-0.4666666667x + x2 = -0.5333333333

The x term is -0.4666666667x.  Take half its coefficient (-0.2333333334).
Square it (0.05444444448) and add it to both sides.

Add '0.05444444448' to each side of the equation.
-0.4666666667x + 0.05444444448 + x2 = -0.5333333333 + 0.05444444448

Reorder the terms:
0.05444444448 + -0.4666666667x + x2 = -0.5333333333 + 0.05444444448

Combine like terms: -0.5333333333 + 0.05444444448 = -0.47888888882
0.05444444448 + -0.4666666667x + x2 = -0.47888888882

Factor a perfect square on the left side:
(x + -0.2333333334)(x + -0.2333333334) = -0.47888888882

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -2x+11=-3x+14 | | 10x-1=339 | | x+9=-x+41 | | g-9+7=54 | | x*(2*x-5)=3000 | | 2(x-4)-3(2x-5)=5x+7 | | y=2-5/4x | | (x*4)*x=100 | | .75x-5=-2x+6 | | 14j=42 | | u^2-8u+9=0 | | (2x^2-4x+1)+(5x^2+2x+2)= | | 4/3w=2 | | X^3+-36x^2=0 | | 20x+26.25-26.25x=250 | | 4a+8a-6a=42 | | A=-70+2B | | 22x+55= | | 6x-5=-x+5 | | -x-15=5x+3 | | 7x-2=x+8 | | X^3+-36=0 | | -1A+2B=70 | | -6x-2(x+3)=34 | | 2B=70 | | x+(x+24)=148 | | -1x-15=5x+3 | | (2x^2-5x+1)+(3x^2+2x+5)= | | 2s+2(s+2)= | | 187=11u | | 6(8-2x)=-84 | | -3(4x-3)=33 |

Equations solver categories