-3x(x-1)+9=15

Simple and best practice solution for -3x(x-1)+9=15 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 -3x(x-1)+9=15 equation:


Simplifying
-3x(x + -1) + 9 = 15

Reorder the terms:
-3x(-1 + x) + 9 = 15
(-1 * -3x + x * -3x) + 9 = 15
(3x + -3x2) + 9 = 15

Reorder the terms:
9 + 3x + -3x2 = 15

Solving
9 + 3x + -3x2 = 15

Solving for variable 'x'.

Reorder the terms:
9 + -15 + 3x + -3x2 = 15 + -15

Combine like terms: 9 + -15 = -6
-6 + 3x + -3x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-6 + 3x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-2 + x + -1x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-2 + x + -1x2)' equal to zero and attempt to solve: Simplifying -2 + x + -1x2 = 0 Solving -2 + x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 2 + -1x + x2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + -1x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + -1x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x + x2 = 0 + -2 -1x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -1x + x2 = -2 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = -2 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -2 + 0.25 Combine like terms: -2 + 0.25 = -1.75 0.25 + -1x + x2 = -1.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -1.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

See similar equations:

| 3(x-5)+5x=8x-15 | | -(2w)/(w+3)=(2)/(w^2+w-6) | | 1010101-2= | | 2=3p/2-10 | | 1x/4=4x/2 | | -a^2-5a+14=0 | | (x^3z^2)/(27y^16)*(3x^3y^5/z^3)^3 | | 7/2x+24x | | 6x=4(x-7)+17 | | -[8z-(12z+10)]=10+(3z+5) | | (4x+2)/(8)-(2x-3)/(9)=-2 | | -5x^2+3x+2=0 | | 5(2x+2)=2(x-7) | | 4(7x-1)=3(2x+1)+4(x+6) | | (2/7)x+18=8-(3/7)x | | (8x+13)+x+14=90 | | 12/5w=-12 | | x+(x+4)=40 | | (10+15i)-(48-30i)= | | 7m^10+4m^8-2m^7=0 | | 1/8a+3/8a=5/6 | | 1x-2y=-1 | | 3x/6=6x/7-45 | | 3x-2/4=x+4/2 | | 9k^2+45k= | | 24(8v)=-66 | | 6x^2=19x+20 | | 6c-8+5+3c=14 | | -3/5(-8+7x)=3/5 | | 6y(6+4y)=26 | | -4y-66=36 | | 7(v+3)-10(5v-1)= |

Equations solver categories