x^2+3x+40=0

Simple and best practice solution for x^2+3x+40=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+3x+40=0 equation:


Simplifying
x2 + 3x + 40 = 0

Reorder the terms:
40 + 3x + x2 = 0

Solving
40 + 3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-40' to each side of the equation.
40 + 3x + -40 + x2 = 0 + -40

Reorder the terms:
40 + -40 + 3x + x2 = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 3x + x2 = 0 + -40
3x + x2 = 0 + -40

Combine like terms: 0 + -40 = -40
3x + x2 = -40

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 = -40 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -40 + 2.25

Combine like terms: -40 + 2.25 = -37.75
2.25 + 3x + x2 = -37.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = -37.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 8(3a-4)=4a-2 | | -7x=7+14y | | 7=12+x | | x-8-11=-15 | | -7x-14y=7 | | 3y-19=-23+4y | | .333y+10=.666 | | 6(6x-6)+8=8(x+2)-10 | | 5x=6.5 | | 7x-(9+5x)= | | 2r=r-12 | | (x-4)(x+5)=7 | | 10x+1=-x+23 | | 8(x+24)=480 | | p+12(18)=1.5p | | -8x+5x+7+4x=12 | | 6y-6=-22+4y | | -6-3m-5+4m=-35 | | 5(x+3)=2(x+9) | | 2.24x-6.24=4.26x-8.76 | | 4(z+1)=2z+6 | | 8m+24=0 | | 7j+6=23 | | 2y+8=-6 | | 7j+6=77 | | 5(n-2)=3(n+6) | | 5h-9=-16+6n | | x^2-14x+46=0 | | 7x+28=9x-18 | | -4n+7-12n=1 | | 4s+12=36 | | 3(y-7)-y=15 |

Equations solver categories