7x^2-3x=-1

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


Simplifying
7x2 + -3x = -1

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

Solving
-3x + 7x2 = -1

Solving for variable 'x'.

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

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

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

Divide each side by '7'.
0.1428571429 + -0.4285714286x + x2 = 0

Move the constant term to the right:

Add '-0.1428571429' to each side of the equation.
0.1428571429 + -0.4285714286x + -0.1428571429 + x2 = 0 + -0.1428571429

Reorder the terms:
0.1428571429 + -0.1428571429 + -0.4285714286x + x2 = 0 + -0.1428571429

Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000
0.0000000000 + -0.4285714286x + x2 = 0 + -0.1428571429
-0.4285714286x + x2 = 0 + -0.1428571429

Combine like terms: 0 + -0.1428571429 = -0.1428571429
-0.4285714286x + x2 = -0.1428571429

The x term is -0.4285714286x.  Take half its coefficient (-0.2142857143).
Square it (0.04591836735) and add it to both sides.

Add '0.04591836735' to each side of the equation.
-0.4285714286x + 0.04591836735 + x2 = -0.1428571429 + 0.04591836735

Reorder the terms:
0.04591836735 + -0.4285714286x + x2 = -0.1428571429 + 0.04591836735

Combine like terms: -0.1428571429 + 0.04591836735 = -0.09693877555
0.04591836735 + -0.4285714286x + x2 = -0.09693877555

Factor a perfect square on the left side:
(x + -0.2142857143)(x + -0.2142857143) = -0.09693877555

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 23-6=40 | | 8(6y)= | | b+1-5b=9 | | 4-3=4b | | 35=70t-5t^2 | | 3g+4=18 | | ln(x+6)-ln(x)=ln(15) | | lg(x+1)+lg(x-1)=1 | | ln(x+6)+ln(x)=ln(15) | | (-1482)+(-59)= | | x^2+8=44 | | 45x+3=200 | | h=19.6+14.7t-4.9t^2 | | 2(3a-7)=5a-6 | | -4(x+2)+5=12 | | 200+45x=3 | | 6x+3(y)=36 | | 5555555555-4444444444= | | -4(2q+8)+5(q-6)= | | 3(1-3x)=2-4x+7 | | 98765412345678654345654676-12345678765432345678765= | | -2(6-4y)=-12 | | .5(x-10)=6 | | -45-(-55)= | | x+2(5+2x)=13 | | 6x-3x=57 | | 7w+9=18 | | 5x+11=x-7 | | 4(2x+3)=24 | | (-1028)+(598)= | | (2g+7)-(g+5)= | | -8+3x=-16-25x |

Equations solver categories