3x^2+(x-1)=4

Simple and best practice solution for 3x^2+(x-1)=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 3x^2+(x-1)=4 equation:


Simplifying
3x2 + (x + -1) = 4

Reorder the terms:
3x2 + (-1 + x) = 4

Remove parenthesis around (-1 + x)
3x2 + -1 + x = 4

Reorder the terms:
-1 + x + 3x2 = 4

Solving
-1 + x + 3x2 = 4

Solving for variable 'x'.

Reorder the terms:
-1 + -4 + x + 3x2 = 4 + -4

Combine like terms: -1 + -4 = -5
-5 + x + 3x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-5 + x + 3x2 = 0

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

Divide each side by '3'.
-1.666666667 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + 0.3333333333x + 1.666666667 + x2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + 0.3333333333x + x2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + 0.3333333333x + x2 = 0 + 1.666666667
0.3333333333x + x2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
0.3333333333x + x2 = 1.666666667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.3333333333x + 0.25 + x2 = 1.666666667 + 0.25

Reorder the terms:
0.25 + 0.3333333333x + x2 = 1.666666667 + 0.25

Combine like terms: 1.666666667 + 0.25 = 1.916666667
0.25 + 0.3333333333x + x2 = 1.916666667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 1.916666667

Calculate the square root of the right side: 1.384437311

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.384437311 and -1.384437311.

Subproblem 1

x + 0.5 = 1.384437311 Simplifying x + 0.5 = 1.384437311 Reorder the terms: 0.5 + x = 1.384437311 Solving 0.5 + x = 1.384437311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.384437311 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.384437311 + -0.5 x = 1.384437311 + -0.5 Combine like terms: 1.384437311 + -0.5 = 0.884437311 x = 0.884437311 Simplifying x = 0.884437311

Subproblem 2

x + 0.5 = -1.384437311 Simplifying x + 0.5 = -1.384437311 Reorder the terms: 0.5 + x = -1.384437311 Solving 0.5 + x = -1.384437311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.384437311 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.384437311 + -0.5 x = -1.384437311 + -0.5 Combine like terms: -1.384437311 + -0.5 = -1.884437311 x = -1.884437311 Simplifying x = -1.884437311

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.884437311, -1.884437311}

See similar equations:

| 3x+4/5+x+17/4=11 | | -3.28=8(1.5y-.5) | | -3d/-4+5=11 | | 3s^2=12s | | 12(4)= | | 11.17=2.49+1.4a | | 16t^2-96t+80=0 | | -22/-11= | | m/2=-15 | | 7-d=1.3 | | 11.17=2.49-1.24a | | 10(-4)= | | (-w/4)+3=8 | | 2x+6=(4/3)(X) | | 90=x^2-7x+60 | | 1/3x-8=10 | | 3(6)= | | 4(3-u)+u=2(11+u) | | -3+4y=1 | | 11.17=1.24a-2.49 | | 3s=12s | | 136-64=x | | -6(8-x)+15=51 | | 3x/2+(x-1)/3=(5x+7)/6 | | -5(3x-2)+8x=3(x+6) | | 8n-(3n+7)=8 | | 64+x+x=1361/2 | | x(x-6)=x*2+3x+5 | | (7/28)/(8/28) | | 25+3y=-12 | | 6-(8)= | | 4v^2-27v-34=0 |

Equations solver categories