x-4=7x^2-x-1

Simple and best practice solution for x-4=7x^2-x-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 x-4=7x^2-x-1 equation:


Simplifying
x + -4 = 7x2 + -1x + -1

Reorder the terms:
-4 + x = 7x2 + -1x + -1

Reorder the terms:
-4 + x = -1 + -1x + 7x2

Solving
-4 + x = -1 + -1x + 7x2

Solving for variable 'x'.

Reorder the terms:
-4 + 1 + x + x + -7x2 = -1 + -1x + 7x2 + 1 + x + -7x2

Combine like terms: -4 + 1 = -3
-3 + x + x + -7x2 = -1 + -1x + 7x2 + 1 + x + -7x2

Combine like terms: x + x = 2x
-3 + 2x + -7x2 = -1 + -1x + 7x2 + 1 + x + -7x2

Reorder the terms:
-3 + 2x + -7x2 = -1 + 1 + -1x + x + 7x2 + -7x2

Combine like terms: -1 + 1 = 0
-3 + 2x + -7x2 = 0 + -1x + x + 7x2 + -7x2
-3 + 2x + -7x2 = -1x + x + 7x2 + -7x2

Combine like terms: -1x + x = 0
-3 + 2x + -7x2 = 0 + 7x2 + -7x2
-3 + 2x + -7x2 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-3 + 2x + -7x2 = 0

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
0.4285714286 + -0.2857142857x + x2 = 0

Move the constant term to the right:

Add '-0.4285714286' to each side of the equation.
0.4285714286 + -0.2857142857x + -0.4285714286 + x2 = 0 + -0.4285714286

Reorder the terms:
0.4285714286 + -0.4285714286 + -0.2857142857x + x2 = 0 + -0.4285714286

Combine like terms: 0.4285714286 + -0.4285714286 = 0.0000000000
0.0000000000 + -0.2857142857x + x2 = 0 + -0.4285714286
-0.2857142857x + x2 = 0 + -0.4285714286

Combine like terms: 0 + -0.4285714286 = -0.4285714286
-0.2857142857x + x2 = -0.4285714286

The x term is -0.2857142857x.  Take half its coefficient (-0.1428571429).
Square it (0.02040816328) and add it to both sides.

Add '0.02040816328' to each side of the equation.
-0.2857142857x + 0.02040816328 + x2 = -0.4285714286 + 0.02040816328

Reorder the terms:
0.02040816328 + -0.2857142857x + x2 = -0.4285714286 + 0.02040816328

Combine like terms: -0.4285714286 + 0.02040816328 = -0.40816326532
0.02040816328 + -0.2857142857x + x2 = -0.40816326532

Factor a perfect square on the left side:
(x + -0.1428571429)(x + -0.1428571429) = -0.40816326532

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -23=3b+10 | | (m-n+k)(m+8n-9k)=0 | | 4y-36=11x+66 | | -2y/3=8 | | 6-6x-4=-47+4x-11 | | 4/5z=20 | | 3(7x-5)+4(16-3x)-4(2x+1)=-1 | | .07x-.04=.01x-.6 | | -6x=12/7 | | 20t+14=30+7 | | -5x-11=2x+24 | | 2.1x=.49 | | 6x+4=9x+3 | | 3/3-12i | | 2x^2-7x^2+5=0 | | n^2-n-50=6 | | 15=-3/7x | | -134=-8n+10 | | 78-5x=19x | | 0=x^4-49x^2 | | -8x+y=29 | | 54=y | | 3.9+M=8.6 | | 7x-8x=10-25 | | 3b/4=11/2 | | 7/9j=10 | | b^2+7b-39=5 | | 12.8=4v | | -9x+15=6x | | 6x+6=-4x-34 | | -7v-10=-73 | | F-5(2)=3 |

Equations solver categories