25x^2-30x-3=0

Simple and best practice solution for 25x^2-30x-3=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 25x^2-30x-3=0 equation:


Simplifying
25x2 + -30x + -3 = 0

Reorder the terms:
-3 + -30x + 25x2 = 0

Solving
-3 + -30x + 25x2 = 0

Solving for variable 'x'.

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

Divide each side by '25'.
-0.12 + -1.2x + x2 = 0

Move the constant term to the right:

Add '0.12' to each side of the equation.
-0.12 + -1.2x + 0.12 + x2 = 0 + 0.12

Reorder the terms:
-0.12 + 0.12 + -1.2x + x2 = 0 + 0.12

Combine like terms: -0.12 + 0.12 = 0.00
0.00 + -1.2x + x2 = 0 + 0.12
-1.2x + x2 = 0 + 0.12

Combine like terms: 0 + 0.12 = 0.12
-1.2x + x2 = 0.12

The x term is -1.2x.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2x + 0.36 + x2 = 0.12 + 0.36

Reorder the terms:
0.36 + -1.2x + x2 = 0.12 + 0.36

Combine like terms: 0.12 + 0.36 = 0.48
0.36 + -1.2x + x2 = 0.48

Factor a perfect square on the left side:
(x + -0.6)(x + -0.6) = 0.48

Calculate the square root of the right side: 0.692820323

Break this problem into two subproblems by setting 
(x + -0.6) equal to 0.692820323 and -0.692820323.

Subproblem 1

x + -0.6 = 0.692820323 Simplifying x + -0.6 = 0.692820323 Reorder the terms: -0.6 + x = 0.692820323 Solving -0.6 + x = 0.692820323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + x = 0.692820323 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + x = 0.692820323 + 0.6 x = 0.692820323 + 0.6 Combine like terms: 0.692820323 + 0.6 = 1.292820323 x = 1.292820323 Simplifying x = 1.292820323

Subproblem 2

x + -0.6 = -0.692820323 Simplifying x + -0.6 = -0.692820323 Reorder the terms: -0.6 + x = -0.692820323 Solving -0.6 + x = -0.692820323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + x = -0.692820323 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + x = -0.692820323 + 0.6 x = -0.692820323 + 0.6 Combine like terms: -0.692820323 + 0.6 = -0.092820323 x = -0.092820323 Simplifying x = -0.092820323

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.292820323, -0.092820323}

See similar equations:

| -23=7+5u | | 7(10-3x)=5(15-4x) | | 100-P=.5P-5 | | -32=6(v-6)-8v | | 0.1(x+7)=3.5 | | 6x-4x=6 | | 2x+54=-4x | | 14-2Q=-2-4Q | | 46.7=y-43.2 | | 48*(8+x)=6(7+x) | | -4(3-6x)=9(2x-2) | | 4(b-8)+3b(11-b)-7= | | 8.2(x-7)=-2.96 | | 7x=17.5 | | 7(4y-3)=21y | | 54x^2-18x^2=0 | | .85714285714y=.8 | | 0.4(x+2.4)=2.96 | | 8(x-5)=2(3x-8) | | -10(z+1)+2z=3(2z+1)+1 | | 12x=6x+30 | | 2x=-3x-46 | | x+10.4=39.78 | | 7-.5P=.25P-.5 | | 44.2=y-27.9 | | 2x+18=12-6(x+7) | | -7.2(x-15.6)=-9 | | 5x+4(3x-8)=4+13x | | 14+-2Q=-2+-4Q | | 3x+63=-4x | | 8.3(x+3.1)=1 | | 4x-3x=-1x+12 |

Equations solver categories