5x^2+14x-6=0

Simple and best practice solution for 5x^2+14x-6=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 5x^2+14x-6=0 equation:


Simplifying
5x2 + 14x + -6 = 0

Reorder the terms:
-6 + 14x + 5x2 = 0

Solving
-6 + 14x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-1.2 + 2.8x + x2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + 2.8x + 1.2 + x2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + 2.8x + x2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 2.8x + x2 = 0 + 1.2
2.8x + x2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
2.8x + x2 = 1.2

The x term is 2.8x.  Take half its coefficient (1.4).
Square it (1.96) and add it to both sides.

Add '1.96' to each side of the equation.
2.8x + 1.96 + x2 = 1.2 + 1.96

Reorder the terms:
1.96 + 2.8x + x2 = 1.2 + 1.96

Combine like terms: 1.2 + 1.96 = 3.16
1.96 + 2.8x + x2 = 3.16

Factor a perfect square on the left side:
(x + 1.4)(x + 1.4) = 3.16

Calculate the square root of the right side: 1.777638883

Break this problem into two subproblems by setting 
(x + 1.4) equal to 1.777638883 and -1.777638883.

Subproblem 1

x + 1.4 = 1.777638883 Simplifying x + 1.4 = 1.777638883 Reorder the terms: 1.4 + x = 1.777638883 Solving 1.4 + x = 1.777638883 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.4' to each side of the equation. 1.4 + -1.4 + x = 1.777638883 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + x = 1.777638883 + -1.4 x = 1.777638883 + -1.4 Combine like terms: 1.777638883 + -1.4 = 0.377638883 x = 0.377638883 Simplifying x = 0.377638883

Subproblem 2

x + 1.4 = -1.777638883 Simplifying x + 1.4 = -1.777638883 Reorder the terms: 1.4 + x = -1.777638883 Solving 1.4 + x = -1.777638883 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.4' to each side of the equation. 1.4 + -1.4 + x = -1.777638883 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + x = -1.777638883 + -1.4 x = -1.777638883 + -1.4 Combine like terms: -1.777638883 + -1.4 = -3.177638883 x = -3.177638883 Simplifying x = -3.177638883

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.377638883, -3.177638883}

See similar equations:

| 20y+5y=10y+15 | | 5d+9e+9d+9e= | | (5a^4+5ab^2)+(6ab^2-5a^4b)= | | h^2+16h+15= | | 2*6p+7*6+2*7*p=146 | | 91-2x=16+23 | | 59-3x=6x+18 | | 13-12*x=10 | | 12-10x=58-24x | | 6-8x=42-15x | | 5x+9=-75-7x | | -2x^2+5x=3 | | 92-4x=3x+8 | | 2x+3=5x+2 | | -5x^2-6x=-6 | | 5x-4=3x-6 | | 14x+12=12x+15 | | x^4-25x^2+100=0 | | -(5y+2)-(-4y-3)=-4 | | (22+2x)(10+2x)-(22*10)=420 | | -2(u-5)-(u+1)=-18 | | 2n+n=39 | | 2a(4a-9)= | | x^2+8=3x | | (w^2-5*w-6)+(3w^2-4*w+2)= | | X(2x-3)=43 | | -6x^2+13x=-5 | | 171-3x=42x+21 | | 174-2x=25x+21 | | 12-9x=25-16x | | (n+w)*2=48 | | 10x-4=2x+6 |

Equations solver categories