x^2+3x+45=0

Simple and best practice solution for x^2+3x+45=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+45=0 equation:


Simplifying
x2 + 3x + 45 = 0

Reorder the terms:
45 + 3x + x2 = 0

Solving
45 + 3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-45' to each side of the equation.
45 + 3x + -45 + x2 = 0 + -45

Reorder the terms:
45 + -45 + 3x + x2 = 0 + -45

Combine like terms: 45 + -45 = 0
0 + 3x + x2 = 0 + -45
3x + x2 = 0 + -45

Combine like terms: 0 + -45 = -45
3x + x2 = -45

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 = -45 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -45 + 2.25

Combine like terms: -45 + 2.25 = -42.75
2.25 + 3x + x2 = -42.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = -42.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4+0.5x=0.1+0.1y | | (11+2y)-2y=11 | | 1.6+0.3y=-5+3x | | x(x-2)-1=3 | | 8+4w+3+w= | | 4n^2-5n+7=7 | | 0.75+-1.125x=-5+-4x | | 3y^2-12=0 | | .5x^2-9x+41=0 | | 1+0.5y=2.6+1.3y | | 15x+5=17x-5 | | x^2-4x-13=-5 | | p-8/5=12/4 | | -4x+3=4x+5 | | -13+4t=-36 | | 3y+9=15x | | -4x+24=9x+102 | | 7(14-7)=77-14y | | 5x+2(2-4x)=13 | | r^2-8r-5=4 | | x^2-4x+51=0 | | 10x+4=2y | | x^25=0 | | 10x+4=2x | | 3(-8+13)=3y+9 | | 3y^2-3=0 | | 2x^2+24-266=0 | | 5(2+4)=10y-70 | | 7(22-9)=21y-161 | | 2+6i= | | y=x^2-4x+51 | | 7(4-24)=84-28y |

Equations solver categories