-x^2+6x+3=0

Simple and best practice solution for -x^2+6x+3=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 -x^2+6x+3=0 equation:


Simplifying
-1x2 + 6x + 3 = 0

Reorder the terms:
3 + 6x + -1x2 = 0

Solving
3 + 6x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-3 + -6x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -6x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -6x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -6x + x2 = 0 + 3
-6x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-6x + x2 = 3

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 3 + 9

Reorder the terms:
9 + -6x + x2 = 3 + 9

Combine like terms: 3 + 9 = 12
9 + -6x + x2 = 12

Factor a perfect square on the left side:
(x + -3)(x + -3) = 12

Calculate the square root of the right side: 3.464101615

Break this problem into two subproblems by setting 
(x + -3) equal to 3.464101615 and -3.464101615.

Subproblem 1

x + -3 = 3.464101615 Simplifying x + -3 = 3.464101615 Reorder the terms: -3 + x = 3.464101615 Solving -3 + x = 3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 3.464101615 + 3 Combine like terms: -3 + 3 = 0 0 + x = 3.464101615 + 3 x = 3.464101615 + 3 Combine like terms: 3.464101615 + 3 = 6.464101615 x = 6.464101615 Simplifying x = 6.464101615

Subproblem 2

x + -3 = -3.464101615 Simplifying x + -3 = -3.464101615 Reorder the terms: -3 + x = -3.464101615 Solving -3 + x = -3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -3.464101615 + 3 Combine like terms: -3 + 3 = 0 0 + x = -3.464101615 + 3 x = -3.464101615 + 3 Combine like terms: -3.464101615 + 3 = -0.464101615 x = -0.464101615 Simplifying x = -0.464101615

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.464101615, -0.464101615}

See similar equations:

| ln(5x+2)=ln(3x+14) | | 4.3q-2.7-4.5q=-1.2q-5.7 | | 7x+28=29 | | 4(W+2)-5(W+3)=0 | | x-4-3=2-x | | 9(3t+30)=-24 | | 14(t-2)+7t=7(3t+3)-12 | | 2(W+2)-3(W+5)=0 | | 7x-16=65 | | 15=21-2x | | 25w^2-40w+16= | | 3(6x+10)=120 | | S-36=-16 | | -6(x-7)=-3x+15 | | n*9-15=21 | | 209=11(5a-6) | | 5y+7=-28 | | 7n-27=29 | | 4-2x=8-4x | | 2=8+2y | | 6(3x-4)=3(6x+7) | | 100=48+3w+10w | | 6+3w=0 | | x^3-4x^2+8=0 | | 6+17z-2=9z+109-7z | | 12b^2-17bc-5c^2= | | 5-x=7+2x-4 | | 7(4b-4)=112 | | x^3+4x^2+8=0 | | 3t+7t=20 | | y=2x^2+x-15 | | 23-x-8=6x-4x |

Equations solver categories