7x^2-16x+6=0

Simple and best practice solution for 7x^2-16x+6=0 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^2-16x+6=0 equation:


Simplifying
7x2 + -16x + 6 = 0

Reorder the terms:
6 + -16x + 7x2 = 0

Solving
6 + -16x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
0.8571428571 + -2.285714286x + x2 = 0

Move the constant term to the right:

Add '-0.8571428571' to each side of the equation.
0.8571428571 + -2.285714286x + -0.8571428571 + x2 = 0 + -0.8571428571

Reorder the terms:
0.8571428571 + -0.8571428571 + -2.285714286x + x2 = 0 + -0.8571428571

Combine like terms: 0.8571428571 + -0.8571428571 = 0.0000000000
0.0000000000 + -2.285714286x + x2 = 0 + -0.8571428571
-2.285714286x + x2 = 0 + -0.8571428571

Combine like terms: 0 + -0.8571428571 = -0.8571428571
-2.285714286x + x2 = -0.8571428571

The x term is -2.285714286x.  Take half its coefficient (-1.142857143).
Square it (1.306122449) and add it to both sides.

Add '1.306122449' to each side of the equation.
-2.285714286x + 1.306122449 + x2 = -0.8571428571 + 1.306122449

Reorder the terms:
1.306122449 + -2.285714286x + x2 = -0.8571428571 + 1.306122449

Combine like terms: -0.8571428571 + 1.306122449 = 0.4489795919
1.306122449 + -2.285714286x + x2 = 0.4489795919

Factor a perfect square on the left side:
(x + -1.142857143)(x + -1.142857143) = 0.4489795919

Calculate the square root of the right side: 0.670059394

Break this problem into two subproblems by setting 
(x + -1.142857143) equal to 0.670059394 and -0.670059394.

Subproblem 1

x + -1.142857143 = 0.670059394 Simplifying x + -1.142857143 = 0.670059394 Reorder the terms: -1.142857143 + x = 0.670059394 Solving -1.142857143 + x = 0.670059394 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.142857143' to each side of the equation. -1.142857143 + 1.142857143 + x = 0.670059394 + 1.142857143 Combine like terms: -1.142857143 + 1.142857143 = 0.000000000 0.000000000 + x = 0.670059394 + 1.142857143 x = 0.670059394 + 1.142857143 Combine like terms: 0.670059394 + 1.142857143 = 1.812916537 x = 1.812916537 Simplifying x = 1.812916537

Subproblem 2

x + -1.142857143 = -0.670059394 Simplifying x + -1.142857143 = -0.670059394 Reorder the terms: -1.142857143 + x = -0.670059394 Solving -1.142857143 + x = -0.670059394 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.142857143' to each side of the equation. -1.142857143 + 1.142857143 + x = -0.670059394 + 1.142857143 Combine like terms: -1.142857143 + 1.142857143 = 0.000000000 0.000000000 + x = -0.670059394 + 1.142857143 x = -0.670059394 + 1.142857143 Combine like terms: -0.670059394 + 1.142857143 = 0.472797749 x = 0.472797749 Simplifying x = 0.472797749

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.812916537, 0.472797749}

See similar equations:

| -3(2/-3) | | 2x+3y-2x-3y=23 | | 2-7/9x=5/6 | | 2x-4=12-3x | | 2x={360/4} | | 4(y-6)=8 | | x+(0.2x)=20.34 | | 27=3s-4b | | (y-2)3=18 | | 2/3(-15a) | | x+(0.03x)=20.96 | | (2x-5)(1-x)= | | X^2+66x+5=0 | | 6y+7-y=2+4y-8 | | 3(y+3)+5y=4(2y+1) | | +2(+9+p)=12 | | 7x-8=-10x | | 3-2.7(8+x)=16.5 | | 3-2.7(8+x)=16 | | 3-2.78(8+x)=16.5 | | -2.4-3x-5.1-x=-3x+5.8 | | -(2x-7y+2)= | | -3+[-9]-6= | | 2y+5=4y+1 | | 3(d-8)+2= | | 6+2u+5=15 | | 3y-8x=16 | | -6(x+5)= | | 5x+3=12x+2 | | 6(r-6)= | | t=-18 | | -4x-5(7)=-15 |

Equations solver categories