3x^2-6=7x-1

Simple and best practice solution for 3x^2-6=7x-1 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^2-6=7x-1 equation:


Simplifying
3x2 + -6 = 7x + -1

Reorder the terms:
-6 + 3x2 = 7x + -1

Reorder the terms:
-6 + 3x2 = -1 + 7x

Solving
-6 + 3x2 = -1 + 7x

Solving for variable 'x'.

Reorder the terms:
-6 + 1 + -7x + 3x2 = -1 + 7x + 1 + -7x

Combine like terms: -6 + 1 = -5
-5 + -7x + 3x2 = -1 + 7x + 1 + -7x

Reorder the terms:
-5 + -7x + 3x2 = -1 + 1 + 7x + -7x

Combine like terms: -1 + 1 = 0
-5 + -7x + 3x2 = 0 + 7x + -7x
-5 + -7x + 3x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
-5 + -7x + 3x2 = 0

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

Divide each side by '3'.
-1.666666667 + -2.333333333x + x2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + -2.333333333x + 1.666666667 + x2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + -2.333333333x + x2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + -2.333333333x + x2 = 0 + 1.666666667
-2.333333333x + x2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
-2.333333333x + x2 = 1.666666667

The x term is -2.333333333x.  Take half its coefficient (-1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
-2.333333333x + 1.361111112 + x2 = 1.666666667 + 1.361111112

Reorder the terms:
1.361111112 + -2.333333333x + x2 = 1.666666667 + 1.361111112

Combine like terms: 1.666666667 + 1.361111112 = 3.027777779
1.361111112 + -2.333333333x + x2 = 3.027777779

Factor a perfect square on the left side:
(x + -1.166666667)(x + -1.166666667) = 3.027777779

Calculate the square root of the right side: 1.740051085

Break this problem into two subproblems by setting 
(x + -1.166666667) equal to 1.740051085 and -1.740051085.

Subproblem 1

x + -1.166666667 = 1.740051085 Simplifying x + -1.166666667 = 1.740051085 Reorder the terms: -1.166666667 + x = 1.740051085 Solving -1.166666667 + x = 1.740051085 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = 1.740051085 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = 1.740051085 + 1.166666667 x = 1.740051085 + 1.166666667 Combine like terms: 1.740051085 + 1.166666667 = 2.906717752 x = 2.906717752 Simplifying x = 2.906717752

Subproblem 2

x + -1.166666667 = -1.740051085 Simplifying x + -1.166666667 = -1.740051085 Reorder the terms: -1.166666667 + x = -1.740051085 Solving -1.166666667 + x = -1.740051085 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = -1.740051085 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = -1.740051085 + 1.166666667 x = -1.740051085 + 1.166666667 Combine like terms: -1.740051085 + 1.166666667 = -0.573384418 x = -0.573384418 Simplifying x = -0.573384418

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.906717752, -0.573384418}

See similar equations:

| x-1/7=5/7 | | 13=43-x | | 4x=10+48 | | 25x/5-7=12 | | 6-10x=54-38x | | X+1.2=0 | | 5y^(1/2)+y^(1/4)-22=0 | | 5y^1/2+y^1/4-22=0 | | 5y^1/2y^1/4-22=0 | | 3(2y+3)=5y+8 | | 2e+6=4e-1 | | 60-3x=72 | | 3y-13=-10 | | -7m=-4 | | 5x+2=2-2x | | 7=19+3b | | 6x+12=7x+7 | | 21/m+3=m+3 | | -34-2=8-8x | | 3L/2+2/3 | | 34.8k+0.2k(k-4)=1.2-9(2-3k) | | y=12+10x | | abs(8x-2)=abs(3x-8) | | 2x+3x/4=1 | | x+1+x(x+1)=64 | | M(4+p)+p(3+m)= | | x(50-2x)=300 | | (200+50x)(4-x)+2400-400-200x-1250=0 | | (4x+1)+(2x+10)=20 | | (4x+1)*(2x+10)=20 | | 8x+2y-1=0 | | 11x+13(x+5)=233 |

Equations solver categories