7x^2=-10x+3

Simple and best practice solution for 7x^2=-10x+3 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=-10x+3 equation:


Simplifying
7x2 = -10x + 3

Reorder the terms:
7x2 = 3 + -10x

Solving
7x2 = 3 + -10x

Solving for variable 'x'.

Reorder the terms:
-3 + 10x + 7x2 = 3 + -10x + -3 + 10x

Reorder the terms:
-3 + 10x + 7x2 = 3 + -3 + -10x + 10x

Combine like terms: 3 + -3 = 0
-3 + 10x + 7x2 = 0 + -10x + 10x
-3 + 10x + 7x2 = -10x + 10x

Combine like terms: -10x + 10x = 0
-3 + 10x + 7x2 = 0

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

Divide each side by '7'.
-0.4285714286 + 1.428571429x + x2 = 0

Move the constant term to the right:

Add '0.4285714286' to each side of the equation.
-0.4285714286 + 1.428571429x + 0.4285714286 + x2 = 0 + 0.4285714286

Reorder the terms:
-0.4285714286 + 0.4285714286 + 1.428571429x + x2 = 0 + 0.4285714286

Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000
0.0000000000 + 1.428571429x + x2 = 0 + 0.4285714286
1.428571429x + x2 = 0 + 0.4285714286

Combine like terms: 0 + 0.4285714286 = 0.4285714286
1.428571429x + x2 = 0.4285714286

The x term is 1.428571429x.  Take half its coefficient (0.7142857145).
Square it (0.5102040819) and add it to both sides.

Add '0.5102040819' to each side of the equation.
1.428571429x + 0.5102040819 + x2 = 0.4285714286 + 0.5102040819

Reorder the terms:
0.5102040819 + 1.428571429x + x2 = 0.4285714286 + 0.5102040819

Combine like terms: 0.4285714286 + 0.5102040819 = 0.9387755105
0.5102040819 + 1.428571429x + x2 = 0.9387755105

Factor a perfect square on the left side:
(x + 0.7142857145)(x + 0.7142857145) = 0.9387755105

Calculate the square root of the right side: 0.968904283

Break this problem into two subproblems by setting 
(x + 0.7142857145) equal to 0.968904283 and -0.968904283.

Subproblem 1

x + 0.7142857145 = 0.968904283 Simplifying x + 0.7142857145 = 0.968904283 Reorder the terms: 0.7142857145 + x = 0.968904283 Solving 0.7142857145 + x = 0.968904283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7142857145' to each side of the equation. 0.7142857145 + -0.7142857145 + x = 0.968904283 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = 0.968904283 + -0.7142857145 x = 0.968904283 + -0.7142857145 Combine like terms: 0.968904283 + -0.7142857145 = 0.2546185685 x = 0.2546185685 Simplifying x = 0.2546185685

Subproblem 2

x + 0.7142857145 = -0.968904283 Simplifying x + 0.7142857145 = -0.968904283 Reorder the terms: 0.7142857145 + x = -0.968904283 Solving 0.7142857145 + x = -0.968904283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7142857145' to each side of the equation. 0.7142857145 + -0.7142857145 + x = -0.968904283 + -0.7142857145 Combine like terms: 0.7142857145 + -0.7142857145 = 0.0000000000 0.0000000000 + x = -0.968904283 + -0.7142857145 x = -0.968904283 + -0.7142857145 Combine like terms: -0.968904283 + -0.7142857145 = -1.6831899975 x = -1.6831899975 Simplifying x = -1.6831899975

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.2546185685, -1.6831899975}

See similar equations:

| 4x+6x=3 | | 3(x+3)=2(x-3) | | ln(3x)=3.3 | | -20=3x-8 | | 2(x+4)=-7 | | 3x-1-36=2x-10 | | s+6=3 | | 39.99+0.45x=44.99+0.40x | | 6(x+9)=5(5x-8)x | | 4(1-5m)=104 | | 4x-2z=3y+8 | | 3(x+9)+11=8x-5(x-3) | | 3x/8=-15/32 | | 1/5(12+b)=25 | | 3(5x-10)=15(x-10) | | y-61/4+121/2 | | (x-10/5)+(2/5)=(x/3) | | 5x+40=6x+12 | | 5g+4(-5+38)=1-g | | 5-40b=10+6b | | 3p-6=-12 | | -18x+7=29 | | 6(x+9)=5(x-8)+x | | 3x=176+-7y | | .04(x+4)=.02(2x+6)+.04 | | (1/2)r+3s=1 | | (3x-2)-(2x+1)=z-3 | | 6x+3=-7 | | .04(x+4)=.02(2+6)+.04 | | (x^2-2)(x^2-5)= | | 6x+54=6x-40 | | 2+2(x+4)=10 |

Equations solver categories