9x+45=x^2-3x

Simple and best practice solution for 9x+45=x^2-3x 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 9x+45=x^2-3x equation:


Simplifying
9x + 45 = x2 + -3x

Reorder the terms:
45 + 9x = x2 + -3x

Reorder the terms:
45 + 9x = -3x + x2

Solving
45 + 9x = -3x + x2

Solving for variable 'x'.

Combine like terms: 9x + 3x = 12x
45 + 12x + -1x2 = -3x + x2 + 3x + -1x2

Reorder the terms:
45 + 12x + -1x2 = -3x + 3x + x2 + -1x2

Combine like terms: -3x + 3x = 0
45 + 12x + -1x2 = 0 + x2 + -1x2
45 + 12x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
45 + 12x + -1x2 = 0

Factor a trinomial.
(15 + -1x)(3 + x) = 0

Subproblem 1

Set the factor '(15 + -1x)' equal to zero and attempt to solve: Simplifying 15 + -1x = 0 Solving 15 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1x = 0 + -15 -1x = 0 + -15 Combine like terms: 0 + -15 = -15 -1x = -15 Divide each side by '-1'. x = 15 Simplifying x = 15

Subproblem 2

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Solution

x = {15, -3}

See similar equations:

| -10(x+5)+66= | | 5x+3(x-9)=4(x+1)-2 | | 5x^10+10x^9-2x^8-4x^7=0 | | 5x+8-6x=2 | | m^2-12m=-32 | | 1/2(7.5)-3/4 | | -1+.75y=-6 | | 39.99+(2.5x)=50+(2.5x) | | 11c-8c+6c=9 | | 30x+336y=12 | | 39.99+(2.5x)=100.00 | | 1+2n=26 | | (6x+3.91)(2.75x+1.7)= | | 7x+14=98 | | 23+4x=-19-3x | | 9+4(-6x-4)=7 | | (x-3)/9=45 | | (11/12)x-(1/4)=8 | | (2.75x+1.7)(0.63+0.012)= | | 5x=2-3x^2 | | x^2+8x=6x | | 8x-9-6x=-2 | | 2(3-4x)+9x-6= | | Px1/4=p4 | | (c+1)4=(2c-5)3 | | 5n+2=3n+12 | | 8t-9=6t+3 | | (4x^2-13x-12)= | | (5x-6)-3x=12 | | 2.75x+1.7*0.63+0.012= | | 4.2x-17.58=5.1 | | x+1.75=sqrt(x^2+9) |

Equations solver categories