x^2+9x+72=17

Simple and best practice solution for x^2+9x+72=17 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+9x+72=17 equation:


Simplifying
x2 + 9x + 72 = 17

Reorder the terms:
72 + 9x + x2 = 17

Solving
72 + 9x + x2 = 17

Solving for variable 'x'.

Reorder the terms:
72 + -17 + 9x + x2 = 17 + -17

Combine like terms: 72 + -17 = 55
55 + 9x + x2 = 17 + -17

Combine like terms: 17 + -17 = 0
55 + 9x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-55' to each side of the equation.
55 + 9x + -55 + x2 = 0 + -55

Reorder the terms:
55 + -55 + 9x + x2 = 0 + -55

Combine like terms: 55 + -55 = 0
0 + 9x + x2 = 0 + -55
9x + x2 = 0 + -55

Combine like terms: 0 + -55 = -55
9x + x2 = -55

The x term is 9x.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9x + 20.25 + x2 = -55 + 20.25

Reorder the terms:
20.25 + 9x + x2 = -55 + 20.25

Combine like terms: -55 + 20.25 = -34.75
20.25 + 9x + x2 = -34.75

Factor a perfect square on the left side:
(x + 4.5)(x + 4.5) = -34.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 8(3-7x)-2(5x+3)=36 | | (44x-28y)+(46x+58y)= | | 9(2x+6)-17= | | -6y^4(3y^2+4y-5)= | | 2x-3(7)=-6 | | 42(3.5+6)=2.5n-2 | | (32x+66y)+(39x-15y)= | | (2x^3)(-4x^8)(5x^6)= | | Y=4f(X)-9 | | 9=-6(r+9) | | -1.6x=40 | | -7m+10=10-7m | | (73x-57y)-(63x+12y)= | | (46x+89y)-(20x+27y)= | | (60x+49y)-(23x-5y)= | | 3.75x-15=y | | (40x-30y)+(43x+61y)= | | (14x-4y)+(41x+69y)= | | 7+v(3)=6+v | | 7+2x=(14+4x) | | 2x+y=350 | | 6.9=-2x+2(x+4.77) | | x+5=89 | | (48x+78y)-(-26x+11y)= | | -4-10=x | | 5(5x-3)+10=-2 | | g=3(4) | | -3=v+1-6 | | -3x+14=-4 | | 12+x^2=133 | | -7y-10=18 | | v/8+6=6-5v/8 |

Equations solver categories