2x^2=-6x-7

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


Simplifying
2x2 = -6x + -7

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

Solving
2x2 = -7 + -6x

Solving for variable 'x'.

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

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

Combine like terms: -7 + 7 = 0
7 + 6x + 2x2 = 0 + -6x + 6x
7 + 6x + 2x2 = -6x + 6x

Combine like terms: -6x + 6x = 0
7 + 6x + 2x2 = 0

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

Divide each side by '2'.
3.5 + 3x + x2 = 0

Move the constant term to the right:

Add '-3.5' to each side of the equation.
3.5 + 3x + -3.5 + x2 = 0 + -3.5

Reorder the terms:
3.5 + -3.5 + 3x + x2 = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + 3x + x2 = 0 + -3.5
3x + x2 = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
3x + x2 = -3.5

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 = -3.5 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -3.5 + 2.25

Combine like terms: -3.5 + 2.25 = -1.25
2.25 + 3x + x2 = -1.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = -1.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| m-2/2=8 | | 4x+35x-15=9x-45 | | 3-6x=1+5(x+2) | | 4(5n+7)-3n=(4n-9) | | 7(7)+3(3(7)+17)= | | -(3y+5)-(-2y-6)=-6 | | m-22=8 | | (x+6)(x-3)=x | | 2x-13+x=47 | | 7x+3(3x+17)=163 | | -7n+7=3(1-n) | | -(3y+1)-(-2y-8)=3 | | 3[z]-(2[z]-2)=9 | | 6b+14=-7-1b | | 6x-3-3x=x+4+x | | 5+7=4t-9 | | 1-2b=21 | | y=-6x+8 | | -3(2p-8)=-18+p | | [5(2x+3)-6]+[6-3(3x-1)-8]= | | 15+7a=-1+8(1+a) | | -90b+90=0 | | 3(4x-1)=2x+7 | | 5(1-2*-5)+8(-5)= | | -2(3x-1)+5x=4x-3 | | 2m+4-3m=-8(m-1) | | 8y-(5y-9)=-160 | | 2(4x+6)=-33-x | | 9n+12(1+4n)=2n+8(1+7n) | | 9y+11=6y-4 | | 2x+7+2x=47 | | -2x-2=x |

Equations solver categories