.5=x*x+2x+3

Simple and best practice solution for .5=x*x+2x+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 .5=x*x+2x+3 equation:


Simplifying
0.5 = x * x + 2x + 3

Multiply x * x
0.5 = x2 + 2x + 3

Reorder the terms:
0.5 = 3 + 2x + x2

Solving
0.5 = 3 + 2x + x2

Solving for variable 'x'.

Combine like terms: 0.5 + -3 = -2.5
-2.5 + -2x + -1x2 = 3 + 2x + x2 + -3 + -2x + -1x2

Reorder the terms:
-2.5 + -2x + -1x2 = 3 + -3 + 2x + -2x + x2 + -1x2

Combine like terms: 3 + -3 = 0
-2.5 + -2x + -1x2 = 0 + 2x + -2x + x2 + -1x2
-2.5 + -2x + -1x2 = 2x + -2x + x2 + -1x2

Combine like terms: 2x + -2x = 0
-2.5 + -2x + -1x2 = 0 + x2 + -1x2
-2.5 + -2x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-2.5 + -2x + -1x2 = 0

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

Divide each side by '-1'.
2.5 + 2x + x2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + 2x + -2.5 + x2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + 2x + x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 2x + x2 = 0 + -2.5
2x + x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
2x + x2 = -2.5

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -2.5 + 1

Reorder the terms:
1 + 2x + x2 = -2.5 + 1

Combine like terms: -2.5 + 1 = -1.5
1 + 2x + x2 = -1.5

Factor a perfect square on the left side:
(x + 1)(x + 1) = -1.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| N+8=-11 | | 0.5x+16=2x | | 12-n=21 | | 21+3x-12=24 | | 4x+6-2x=2(x+7) | | 7x+5(25+4x)=-10 | | 3h-4+5h=h-3-1+7h | | (n-6)-8=-(1+n) | | 18x-4(2x+5)=60 | | 15x-24=99 | | (25m-3)-(15m+14)= | | p=3(-3/3) | | -83+4x=-x+32 | | 9x-5=50 | | 4p+8-1(3+4y)= | | 2a+3-a+5= | | 5x-167=85-4x | | 2.1d=12.6 | | 4=mxtb | | 5ak-yk=14 | | 7x+1=1+7x | | (-11/20)4=k | | 3y-15=6x | | -74-6x=3x+88 | | d=c-s | | -2y=2(3x+4) | | -2-5x=33 | | 3x+2x+x=78 | | 7/10-x-2/5 | | 6x+5y=991772 | | 10f=2f+8 | | -18a+27=17 |

Equations solver categories