3x(3x-4)=-16

Simple and best practice solution for 3x(3x-4)=-16 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(3x-4)=-16 equation:


Simplifying
3x(3x + -4) = -16

Reorder the terms:
3x(-4 + 3x) = -16
(-4 * 3x + 3x * 3x) = -16
(-12x + 9x2) = -16

Solving
-12x + 9x2 = -16

Solving for variable 'x'.

Reorder the terms:
16 + -12x + 9x2 = -16 + 16

Combine like terms: -16 + 16 = 0
16 + -12x + 9x2 = 0

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
1.777777778 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-1.777777778' to each side of the equation.
1.777777778 + -1.333333333x + -1.777777778 + x2 = 0 + -1.777777778

Reorder the terms:
1.777777778 + -1.777777778 + -1.333333333x + x2 = 0 + -1.777777778

Combine like terms: 1.777777778 + -1.777777778 = 0.000000000
0.000000000 + -1.333333333x + x2 = 0 + -1.777777778
-1.333333333x + x2 = 0 + -1.777777778

Combine like terms: 0 + -1.777777778 = -1.777777778
-1.333333333x + x2 = -1.777777778

The x term is -1.333333333x.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333x + 0.4444444442 + x2 = -1.777777778 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -1.777777778 + 0.4444444442

Combine like terms: -1.777777778 + 0.4444444442 = -1.3333333338
0.4444444442 + -1.333333333x + x2 = -1.3333333338

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = -1.3333333338

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 8.2E+2= | | -5.7+b=-7.1 | | 4(x-7)=-14+6x | | 1/4n=-3 | | sin(cos^-1(1/sqrt2)) | | 4x+5+x=3x+11 | | 7(3a+5)= | | 4(x-7)=14+6x | | xy/2=4z | | 2n+26=6(n-1) | | X*4+29=106.50 | | 2/5(g-7)=3 | | N-3/8=3/8 | | 3(n+4)=-4n+26 | | 5(y+6.9)=72 | | 8(y+5.3)=68.8 | | 8/15-(-2/3) | | 6(6.2-x)=5(x+4.8) | | 3(n+4)=4n+26 | | -7(v+3)=-9v-27 | | -4v+36=4(v-5) | | -4v+36=4(v+5) | | 15-7x=-20 | | -5(x+2)=-9x+14 | | -6(6+3a)=8+4a | | 0.875(x-0.5)+0.25x=1 | | -12=2w+2(w-4) | | 4x+8=.1x+3+3.9x | | 8(u+7)+6u=14 | | -3=3(y-2)-6y | | 4x+8=.1+3+3.9 | | 4X^3-39x^2+93.5x=0 |

Equations solver categories