25x^2-10x-4=

Simple and best practice solution for 25x^2-10x-4= 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^2-10x-4= equation:


Simplifying
25x2 + -10x + -4 = 0

Reorder the terms:
-4 + -10x + 25x2 = 0

Solving
-4 + -10x + 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'.
-0.16 + -0.4x + x2 = 0

Move the constant term to the right:

Add '0.16' to each side of the equation.
-0.16 + -0.4x + 0.16 + x2 = 0 + 0.16

Reorder the terms:
-0.16 + 0.16 + -0.4x + x2 = 0 + 0.16

Combine like terms: -0.16 + 0.16 = 0.00
0.00 + -0.4x + x2 = 0 + 0.16
-0.4x + x2 = 0 + 0.16

Combine like terms: 0 + 0.16 = 0.16
-0.4x + x2 = 0.16

The x term is -0.4x.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4x + 0.04 + x2 = 0.16 + 0.04

Reorder the terms:
0.04 + -0.4x + x2 = 0.16 + 0.04

Combine like terms: 0.16 + 0.04 = 0.2
0.04 + -0.4x + x2 = 0.2

Factor a perfect square on the left side:
(x + -0.2)(x + -0.2) = 0.2

Calculate the square root of the right side: 0.447213596

Break this problem into two subproblems by setting 
(x + -0.2) equal to 0.447213596 and -0.447213596.

Subproblem 1

x + -0.2 = 0.447213596 Simplifying x + -0.2 = 0.447213596 Reorder the terms: -0.2 + x = 0.447213596 Solving -0.2 + x = 0.447213596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = 0.447213596 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = 0.447213596 + 0.2 x = 0.447213596 + 0.2 Combine like terms: 0.447213596 + 0.2 = 0.647213596 x = 0.647213596 Simplifying x = 0.647213596

Subproblem 2

x + -0.2 = -0.447213596 Simplifying x + -0.2 = -0.447213596 Reorder the terms: -0.2 + x = -0.447213596 Solving -0.2 + x = -0.447213596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = -0.447213596 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = -0.447213596 + 0.2 x = -0.447213596 + 0.2 Combine like terms: -0.447213596 + 0.2 = -0.247213596 x = -0.247213596 Simplifying x = -0.247213596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.647213596, -0.247213596}

See similar equations:

| 10-9x=8x-4x-16 | | 7(4x-9)-7x=0 | | -6x-6+7(x+1)=-4x-7 | | 6x^2+6x=0 | | X^2+5x-8550= | | [-6+(-3)]+[7+(-4)]= | | 3(u-5)-8u=20 | | 5x+30=3x+12 | | 10+x-0.3x=0 | | 25b=0 | | 2x-35-90x= | | 2y-4= | | -6=4y^2-11y | | 0.5c-3=2c-24 | | -x^2+13x=36 | | -0.2p+1.8p+6=30 | | 3(5x-2)+9=10x-2 | | 2(5s+5)-4s=3(2s+6)-22 | | 4c+8=5.457479 | | x^4-10x^3-10x+26x^2+1=0 | | x^2+18x=9 | | 64r^2+128r-57= | | y^2-7y-44= | | 6x=5x-9 | | x^4+8x=y | | 3z=12-z | | -x^2+20x-91= | | -10=-12+0.57n | | .75x=16 | | 6p^4-32p^3+5p^2=0 | | 2x^3-19x^2=-9x | | 2(4t-1)+t=8-1 |

Equations solver categories