-7x^2+6x+2=0

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


Simplifying
-7x2 + 6x + 2 = 0

Reorder the terms:
2 + 6x + -7x2 = 0

Solving
2 + 6x + -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'.
-0.2857142857 + -0.8571428571x + x2 = 0

Move the constant term to the right:

Add '0.2857142857' to each side of the equation.
-0.2857142857 + -0.8571428571x + 0.2857142857 + x2 = 0 + 0.2857142857

Reorder the terms:
-0.2857142857 + 0.2857142857 + -0.8571428571x + x2 = 0 + 0.2857142857

Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000
0.0000000000 + -0.8571428571x + x2 = 0 + 0.2857142857
-0.8571428571x + x2 = 0 + 0.2857142857

Combine like terms: 0 + 0.2857142857 = 0.2857142857
-0.8571428571x + x2 = 0.2857142857

The x term is -0.8571428571x.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571x + 0.1836734694 + x2 = 0.2857142857 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571x + x2 = 0.2857142857 + 0.1836734694

Combine like terms: 0.2857142857 + 0.1836734694 = 0.4693877551
0.1836734694 + -0.8571428571x + x2 = 0.4693877551

Factor a perfect square on the left side:
(x + -0.4285714286)(x + -0.4285714286) = 0.4693877551

Calculate the square root of the right side: 0.685118789

Break this problem into two subproblems by setting 
(x + -0.4285714286) equal to 0.685118789 and -0.685118789.

Subproblem 1

x + -0.4285714286 = 0.685118789 Simplifying x + -0.4285714286 = 0.685118789 Reorder the terms: -0.4285714286 + x = 0.685118789 Solving -0.4285714286 + x = 0.685118789 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + x = 0.685118789 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + x = 0.685118789 + 0.4285714286 x = 0.685118789 + 0.4285714286 Combine like terms: 0.685118789 + 0.4285714286 = 1.1136902176 x = 1.1136902176 Simplifying x = 1.1136902176

Subproblem 2

x + -0.4285714286 = -0.685118789 Simplifying x + -0.4285714286 = -0.685118789 Reorder the terms: -0.4285714286 + x = -0.685118789 Solving -0.4285714286 + x = -0.685118789 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + x = -0.685118789 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + x = -0.685118789 + 0.4285714286 x = -0.685118789 + 0.4285714286 Combine like terms: -0.685118789 + 0.4285714286 = -0.2565473604 x = -0.2565473604 Simplifying x = -0.2565473604

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1136902176, -0.2565473604}

See similar equations:

| 4x/X-1+1/X=5 | | 5x+6=5(x+2) | | -3-3=8-2x+3x | | m(m+4)=-3 | | 6y+0.166666667=7y+0.833333333 | | -5w+3+6w=5-3 | | c-6=-5+3 | | 8b-4(b-2)=17 | | 1+b=-14-9 | | -11=-4+t | | 5v=2v+24 | | 97000=2437x^2+5713x+5900 | | 56=3.5*x | | (5x+6)(4x+2)= | | 100x=10(160+x) | | M=amt | | -x+2+11x=-6+2x+16 | | 19=2437x^2+5713x+5900 | | -x+2+11x=-6+2x+15 | | -9(v+2)+2v+5=6v+8 | | 13.3r-5.7=2(1.9r-3.8) | | 2x-15=3(x-5) | | 20x+3=5(4x+1)-x+4 | | 2.5X+3.75y=86.25 | | 4xy+3x-y=16 | | 5x+8x-2x-5=17 | | (y-5)-(y+4)=0 | | 288=144x-16x^2 | | 200=144x-16x^2 | | 2x-3=2-7 | | 4(x-3)+2(3x+1)=15 | | 11.25x+4.5y=81 |

Equations solver categories