-2x^2+6x=-3

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


Simplifying
-2x2 + 6x = -3

Reorder the terms:
6x + -2x2 = -3

Solving
6x + -2x2 = -3

Solving for variable 'x'.

Reorder the terms:
3 + 6x + -2x2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + 6x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-1.5 + -3x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -3x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -3x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -3x + x2 = 0 + 1.5
-3x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-3x + x2 = 1.5

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 1.5 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 1.5 + 2.25

Combine like terms: 1.5 + 2.25 = 3.75
2.25 + -3x + x2 = 3.75

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 3.75

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(x + -1.5) equal to 1.936491673 and -1.936491673.

Subproblem 1

x + -1.5 = 1.936491673 Simplifying x + -1.5 = 1.936491673 Reorder the terms: -1.5 + x = 1.936491673 Solving -1.5 + x = 1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 1.936491673 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 1.936491673 + 1.5 x = 1.936491673 + 1.5 Combine like terms: 1.936491673 + 1.5 = 3.436491673 x = 3.436491673 Simplifying x = 3.436491673

Subproblem 2

x + -1.5 = -1.936491673 Simplifying x + -1.5 = -1.936491673 Reorder the terms: -1.5 + x = -1.936491673 Solving -1.5 + x = -1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -1.936491673 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -1.936491673 + 1.5 x = -1.936491673 + 1.5 Combine like terms: -1.936491673 + 1.5 = -0.436491673 x = -0.436491673 Simplifying x = -0.436491673

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.436491673, -0.436491673}

See similar equations:

| 8(m-4)-7(m+5)=-67 | | 2-3(x-2)=8 | | 2x-162x=0 | | 8x+4(4x-3)=24x+16-4 | | 12y+6=138 | | t=30m+15 | | t=15m | | -m(2m+1)= | | -67c=6754 | | 5x^2+23x-42=0 | | 7x+33=24 | | 3x-3=-4x+13 | | x(x+4)=x^2+10 | | 3v-8=8+2v+5v | | -67C=6-754 | | 10(v+4)-2v=4(2v+1)-13 | | 142(12-6)= | | 6x^2-8x-2=0 | | 0.6x=0.4+0.8x | | |6-x|=10 | | 3(x+5)=5x+17 | | 7-(4n-2)=4-5n | | 0.6x=.04+0.8x | | y(y+6)=12 | | 3x=4.5 | | .06x=0.4+0.8x | | h(2)=2(2) | | 1.25x=1.3333333333333x+1.5 | | 0.8(x+90)+x=153 | | -9(v+3)+2v+5=7v+11 | | 0.5x-8=0.625x | | (2x+9)*6=6x+12 |

Equations solver categories