11x^2-x=-7

Simple and best practice solution for 11x^2-x=-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 11x^2-x=-7 equation:


Simplifying
11x2 + -1x = -7

Reorder the terms:
-1x + 11x2 = -7

Solving
-1x + 11x2 = -7

Solving for variable 'x'.

Reorder the terms:
7 + -1x + 11x2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + -1x + 11x2 = 0

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

Divide each side by '11'.
0.6363636364 + -0.09090909091x + x2 = 0

Move the constant term to the right:

Add '-0.6363636364' to each side of the equation.
0.6363636364 + -0.09090909091x + -0.6363636364 + x2 = 0 + -0.6363636364

Reorder the terms:
0.6363636364 + -0.6363636364 + -0.09090909091x + x2 = 0 + -0.6363636364

Combine like terms: 0.6363636364 + -0.6363636364 = 0.0000000000
0.0000000000 + -0.09090909091x + x2 = 0 + -0.6363636364
-0.09090909091x + x2 = 0 + -0.6363636364

Combine like terms: 0 + -0.6363636364 = -0.6363636364
-0.09090909091x + x2 = -0.6363636364

The x term is -0.09090909091x.  Take half its coefficient (-0.04545454546).
Square it (0.002066115703) and add it to both sides.

Add '0.002066115703' to each side of the equation.
-0.09090909091x + 0.002066115703 + x2 = -0.6363636364 + 0.002066115703

Reorder the terms:
0.002066115703 + -0.09090909091x + x2 = -0.6363636364 + 0.002066115703

Combine like terms: -0.6363636364 + 0.002066115703 = -0.634297520697
0.002066115703 + -0.09090909091x + x2 = -0.634297520697

Factor a perfect square on the left side:
(x + -0.04545454546)(x + -0.04545454546) = -0.634297520697

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 7+66x=44x+13 | | .12-.02(x+3)=-.01(3-x) | | 25*34= | | 49x1/4 | | 2Y-8=3y-8 | | 7x-6/x=1 | | .6x+.9=.8x-.7 | | .8x-4.6=.2 | | 8=6x+4x | | .16(y-2)+.12y=.2y-.6 | | 5x+5=-4+2x+21 | | 5n-n=48 | | 5(3n+3)=7(7n+4)+2 | | 2x+5+7=18 | | -9y-14=7y+18 | | 28-4x=10-7x | | 4n/3=3n/10 | | (7/y-8)-(6/8-y) | | 8(6x-7)=50 | | -5y-13=4y+14 | | -4(3t-3)+6t=5t-2 | | 4+3x=-6+x | | -2x-6x-5= | | X*.20=23.04 | | r(c-5)+s(c-4)=0 | | 3(n+15)=-45 | | 4x-3(5x+1)=18-2x+3 | | 4[5-4(4-t)]-3=5[4(5t-3)+9]-63 | | -5t^2-20t-25=0 | | 17x+45=37x-33 | | -7x+6=-9x-2 | | 3(2m-3)-4(m+4)= |

Equations solver categories