x^2+8x+90=0

Simple and best practice solution for x^2+8x+90=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+8x+90=0 equation:


Simplifying
x2 + 8x + 90 = 0

Reorder the terms:
90 + 8x + x2 = 0

Solving
90 + 8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-90' to each side of the equation.
90 + 8x + -90 + x2 = 0 + -90

Reorder the terms:
90 + -90 + 8x + x2 = 0 + -90

Combine like terms: 90 + -90 = 0
0 + 8x + x2 = 0 + -90
8x + x2 = 0 + -90

Combine like terms: 0 + -90 = -90
8x + x2 = -90

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = -90 + 16

Reorder the terms:
16 + 8x + x2 = -90 + 16

Combine like terms: -90 + 16 = -74
16 + 8x + x2 = -74

Factor a perfect square on the left side:
(x + 4)(x + 4) = -74

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| x-2=-4x-2 | | 50-1x/3=3 | | 98x-2x=16x+22 | | 10+3(3n-7)=7 | | 1/4(a+2)=1/2(7-a) | | (D^6+9D^4+24D^2+16)y=0 | | A=50 | | 15x/4=5/8 | | 5n-16-8n=-28 | | 7-3z=6 | | x^4+x^3-5x^2-6=0 | | -9n-3=-21 | | (22+2x)(14+2x)=560 | | (X-24)+x=90 | | 175*31/35*4/25 | | 8+10(p-2)=68 | | 3(2p-10)=4p-7/2 | | 145x+-4567=76y-400 | | (X-24)+24=90 | | 5*x=1000 | | 40t=-20 | | -4x+2y-2-y+x=0 | | (X-24)+24=00 | | 3y+3=12-6y | | 24=75%y | | 1/4x=5/9 | | 14m+38/4=26 | | 7n+4n=22 | | -4=-2/3y | | (a+b)(2a+3b)-5ab-3ab^2= | | 5x+10=1309y-278 | | 4+2/7n=10 |

Equations solver categories