18x^2+5x-14=0

Simple and best practice solution for 18x^2+5x-14=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 18x^2+5x-14=0 equation:


Simplifying
18x2 + 5x + -14 = 0

Reorder the terms:
-14 + 5x + 18x2 = 0

Solving
-14 + 5x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
-0.7777777778 + 0.2777777778x + x2 = 0

Move the constant term to the right:

Add '0.7777777778' to each side of the equation.
-0.7777777778 + 0.2777777778x + 0.7777777778 + x2 = 0 + 0.7777777778

Reorder the terms:
-0.7777777778 + 0.7777777778 + 0.2777777778x + x2 = 0 + 0.7777777778

Combine like terms: -0.7777777778 + 0.7777777778 = 0.0000000000
0.0000000000 + 0.2777777778x + x2 = 0 + 0.7777777778
0.2777777778x + x2 = 0 + 0.7777777778

Combine like terms: 0 + 0.7777777778 = 0.7777777778
0.2777777778x + x2 = 0.7777777778

The x term is 0.2777777778x.  Take half its coefficient (0.1388888889).
Square it (0.01929012346) and add it to both sides.

Add '0.01929012346' to each side of the equation.
0.2777777778x + 0.01929012346 + x2 = 0.7777777778 + 0.01929012346

Reorder the terms:
0.01929012346 + 0.2777777778x + x2 = 0.7777777778 + 0.01929012346

Combine like terms: 0.7777777778 + 0.01929012346 = 0.79706790126
0.01929012346 + 0.2777777778x + x2 = 0.79706790126

Factor a perfect square on the left side:
(x + 0.1388888889)(x + 0.1388888889) = 0.79706790126

Calculate the square root of the right side: 0.892786593

Break this problem into two subproblems by setting 
(x + 0.1388888889) equal to 0.892786593 and -0.892786593.

Subproblem 1

x + 0.1388888889 = 0.892786593 Simplifying x + 0.1388888889 = 0.892786593 Reorder the terms: 0.1388888889 + x = 0.892786593 Solving 0.1388888889 + x = 0.892786593 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1388888889' to each side of the equation. 0.1388888889 + -0.1388888889 + x = 0.892786593 + -0.1388888889 Combine like terms: 0.1388888889 + -0.1388888889 = 0.0000000000 0.0000000000 + x = 0.892786593 + -0.1388888889 x = 0.892786593 + -0.1388888889 Combine like terms: 0.892786593 + -0.1388888889 = 0.7538977041 x = 0.7538977041 Simplifying x = 0.7538977041

Subproblem 2

x + 0.1388888889 = -0.892786593 Simplifying x + 0.1388888889 = -0.892786593 Reorder the terms: 0.1388888889 + x = -0.892786593 Solving 0.1388888889 + x = -0.892786593 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1388888889' to each side of the equation. 0.1388888889 + -0.1388888889 + x = -0.892786593 + -0.1388888889 Combine like terms: 0.1388888889 + -0.1388888889 = 0.0000000000 0.0000000000 + x = -0.892786593 + -0.1388888889 x = -0.892786593 + -0.1388888889 Combine like terms: -0.892786593 + -0.1388888889 = -1.0316754819 x = -1.0316754819 Simplifying x = -1.0316754819

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.7538977041, -1.0316754819}

See similar equations:

| 25+7m=12m+5 | | 5(3-t)-(4-3t)=4 | | 5x+4-6x=24 | | .17=-13y | | 6-4m=19 | | 13=-.17y | | Y^2-10y-25=2y^2-8y+1 | | a(bx+12)=cx-2 | | 4-2x=5x-11 | | -1.8(z-8)=2.8(z-7) | | 500x=710 | | 24-6q=18 | | 4+2x^2=12 | | (4y)2= | | x+(x-2)+(x-4)+(x-6)=-44 | | 16x-85=9x-43 | | (Y-5)(y-5)=2y^2-8y+1 | | 2(3r+4)= | | 8x-9x=24+5 | | 15(x-2)-30=12x | | Up+us=x | | 4(x+2)+8(2x-3)= | | 2u^2+13u+10=(u+4)(u+4) | | [u-8]=3[u+4] | | 3+(x+1)-2x=6 | | -7x=y-3b | | 2h+9k-9(7h-8k)= | | 6.2+40.25= | | 0=x^2+2x+27 | | 5x-7=34 | | 3(2x-2)=2(3x-7) | | 3(2x+3)-4(3a-6)=15 |

Equations solver categories