2x^2-3x-118=0

Simple and best practice solution for 2x^2-3x-118=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 2x^2-3x-118=0 equation:


Simplifying
2x2 + -3x + -118 = 0

Reorder the terms:
-118 + -3x + 2x2 = 0

Solving
-118 + -3x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-59 + -1.5x + x2 = 0

Move the constant term to the right:

Add '59' to each side of the equation.
-59 + -1.5x + 59 + x2 = 0 + 59

Reorder the terms:
-59 + 59 + -1.5x + x2 = 0 + 59

Combine like terms: -59 + 59 = 0
0 + -1.5x + x2 = 0 + 59
-1.5x + x2 = 0 + 59

Combine like terms: 0 + 59 = 59
-1.5x + x2 = 59

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 59 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 59 + 0.5625

Combine like terms: 59 + 0.5625 = 59.5625
0.5625 + -1.5x + x2 = 59.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 59.5625

Calculate the square root of the right side: 7.71767452

Break this problem into two subproblems by setting 
(x + -0.75) equal to 7.71767452 and -7.71767452.

Subproblem 1

x + -0.75 = 7.71767452 Simplifying x + -0.75 = 7.71767452 Reorder the terms: -0.75 + x = 7.71767452 Solving -0.75 + x = 7.71767452 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 7.71767452 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 7.71767452 + 0.75 x = 7.71767452 + 0.75 Combine like terms: 7.71767452 + 0.75 = 8.46767452 x = 8.46767452 Simplifying x = 8.46767452

Subproblem 2

x + -0.75 = -7.71767452 Simplifying x + -0.75 = -7.71767452 Reorder the terms: -0.75 + x = -7.71767452 Solving -0.75 + x = -7.71767452 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -7.71767452 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -7.71767452 + 0.75 x = -7.71767452 + 0.75 Combine like terms: -7.71767452 + 0.75 = -6.96767452 x = -6.96767452 Simplifying x = -6.96767452

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.46767452, -6.96767452}

See similar equations:

| 5(x-5)-6(x-4)=10 | | -5(9-4x)=-285 | | 20c^2-39cd+18d^2=0 | | x(x+10)=300 | | -24=-7x+54 | | 8x-6=4x-10 | | -43n=43 | | 66+25x=400+25x | | -5a^2=30 | | -4(5x-3)=7(-2+6) | | 6(m+1)=2(1+5m) | | 10=5r+4+1 | | 36+2m=-5(6+4m) | | 3a-6=-15 | | 7+4x=2(x-8) | | -2x-37=-9x+54 | | 5x-.50y=3 | | 15x+29(x-5)=339 | | 2x-(x-3)=1 | | y=2a^2-2(2a)+5 | | 37-4x=2(3x+10)-(x-1) | | 15-(5m+6)=3+2m-15 | | y=2a^2-2(2a)+5+5 | | 8(m+2)=12+6(2m-12) | | v^2-13v-30=0 | | 8X+14+2X=7X+38 | | -15-x=x-5 | | 5n^2+50n+108=3 | | -8(-7-8n)=-456 | | -9(v+4)+2v+7=7v+9 | | -4(5x-4)=7(-2x+6) | | 3(5x-4)-10x=38 |

Equations solver categories