2x+1=x^2+7

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


Simplifying
2x + 1 = x2 + 7

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

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

Solving
1 + 2x = 7 + x2

Solving for variable 'x'.

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

Combine like terms: 1 + -7 = -6
-6 + 2x + -1x2 = 7 + x2 + -7 + -1x2

Reorder the terms:
-6 + 2x + -1x2 = 7 + -7 + x2 + -1x2

Combine like terms: 7 + -7 = 0
-6 + 2x + -1x2 = 0 + x2 + -1x2
-6 + 2x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-6 + 2x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
6 + -2x + x2 = 0

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -2x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + -2x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -2x + x2 = 0 + -6
-2x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
-2x + x2 = -6

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -6 + 1

Reorder the terms:
1 + -2x + x2 = -6 + 1

Combine like terms: -6 + 1 = -5
1 + -2x + x2 = -5

Factor a perfect square on the left side:
(x + -1)(x + -1) = -5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 5x=3-5x | | 10w^2(7w+2w^4)= | | 8=×/10.24 | | -5(2x+3)=3(11-4x)-5b | | 3(b+12)=8-4d | | 5x=8-(-36/5) | | 12-3b=2+5b | | 10=8b | | A=6B+CsolveB | | 125=100+20+5 | | 5/2=n/5 | | 7+13r+-3=9r+60+-4r | | 7/d=35/10 | | (1x-1)(x+5)=x^2+4x-2 | | 4x+1=-y | | 3-6x^2=-351 | | 3-6x^2=351 | | (2/3k-5/7)(4k-25/7) | | (2/3k)-5/7(4k-25/7) | | 15/x=7 | | (X-2)(x^2+8x-1)= | | 5n-16=-10 | | 240=-8(2+4x) | | (5/4)(-3/10 | | (x+5)and(2x+3)= | | -12w+15w-9+5=-3w+5-9 | | 6y-x=9 | | 1/ab-3/4a^2 | | 8+8(-8-7x)=-224 | | up+uv=tforu | | ((2*x^2*y^-4)/(x^-5*y^3))^-2 | | 14t^11-14t^13=0 |

Equations solver categories