5x^2+14x-12=0

Simple and best practice solution for 5x^2+14x-12=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-12=0 equation:


Simplifying
5x2 + 14x + -12 = 0

Reorder the terms:
-12 + 14x + 5x2 = 0

Solving
-12 + 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'.
-2.4 + 2.8x + x2 = 0

Move the constant term to the right:

Add '2.4' to each side of the equation.
-2.4 + 2.8x + 2.4 + x2 = 0 + 2.4

Reorder the terms:
-2.4 + 2.4 + 2.8x + x2 = 0 + 2.4

Combine like terms: -2.4 + 2.4 = 0.0
0.0 + 2.8x + x2 = 0 + 2.4
2.8x + x2 = 0 + 2.4

Combine like terms: 0 + 2.4 = 2.4
2.8x + x2 = 2.4

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 = 2.4 + 1.96

Reorder the terms:
1.96 + 2.8x + x2 = 2.4 + 1.96

Combine like terms: 2.4 + 1.96 = 4.36
1.96 + 2.8x + x2 = 4.36

Factor a perfect square on the left side:
(x + 1.4)(x + 1.4) = 4.36

Calculate the square root of the right side: 2.088061302

Break this problem into two subproblems by setting 
(x + 1.4) equal to 2.088061302 and -2.088061302.

Subproblem 1

x + 1.4 = 2.088061302 Simplifying x + 1.4 = 2.088061302 Reorder the terms: 1.4 + x = 2.088061302 Solving 1.4 + x = 2.088061302 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 = 2.088061302 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + x = 2.088061302 + -1.4 x = 2.088061302 + -1.4 Combine like terms: 2.088061302 + -1.4 = 0.688061302 x = 0.688061302 Simplifying x = 0.688061302

Subproblem 2

x + 1.4 = -2.088061302 Simplifying x + 1.4 = -2.088061302 Reorder the terms: 1.4 + x = -2.088061302 Solving 1.4 + x = -2.088061302 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 = -2.088061302 + -1.4 Combine like terms: 1.4 + -1.4 = 0.0 0.0 + x = -2.088061302 + -1.4 x = -2.088061302 + -1.4 Combine like terms: -2.088061302 + -1.4 = -3.488061302 x = -3.488061302 Simplifying x = -3.488061302

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.688061302, -3.488061302}

See similar equations:

| 5(4x-20)=20(x-5) | | 5x+6i=-8+2yi | | -0.9x+2.7=x | | 5(t-2)-3t=4(2t+4)-9 | | .05x+.04(52000-x)=2290 | | -x-3+2x=10 | | .06x+1260-.09x=1005 | | 14+3x=x-16 | | 6x+2=4x-8 | | 20x-58=0 | | 2x*3x-6=0 | | 77r^2+26r-40=0 | | 18b-2=-19b+3 | | 18b-2=19b+3 | | 3x-3+2(2x)+13=-2-5x+(16-6) | | 3(t-14)+7(t-12)=14 | | 12-0.8(x-4)=0.4(9x-4) | | 5(24+16)-9=-8(5y-45) | | 12x-(2x-12)=4+9x | | 11=-4x-9 | | -3p-3=-9-2p | | 2(x+4)=x+8 | | 2(x+4)=2x-8 | | 2(x+4)=x-8 | | 3(d-9)=4(d-5) | | 5x/2-x=x/10-21/5 | | 6(2z-3)+3z=22 | | 34+21= | | 6x+4x+3+8=5x+3+4x | | 6-8(a+1)=7+a | | 11111-1532= | | 4x+12=2X+2 |

Equations solver categories