-3x^2+2x=15

Simple and best practice solution for -3x^2+2x=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^2+2x=15 equation:


Simplifying
-3x2 + 2x = 15

Reorder the terms:
2x + -3x2 = 15

Solving
2x + -3x2 = 15

Solving for variable 'x'.

Reorder the terms:
-15 + 2x + -3x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-15 + 2x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
5 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -0.6666666667x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -0.6666666667x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -0.6666666667x + x2 = 0 + -5
-0.6666666667x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-0.6666666667x + x2 = -5

The x term is -0.6666666667x.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = -5 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = -5 + 0.1111111112

Combine like terms: -5 + 0.1111111112 = -4.8888888888
0.1111111112 + -0.6666666667x + x2 = -4.8888888888

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = -4.8888888888

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| (q^2+3)(2q-1)=0 | | 30x+5= | | 10x^2=35x | | (9x^9-7x^7-6x)(3x^5-4x^4+3x^3-8)=0 | | (8x^3/4)(7x^2/3) | | 8x-7(4x+1)=-29 | | 16y^2-9x^2+96y+72x-144=0 | | ln(x-3)=2 | | 36x^4-13x^2+1=0 | | 3(7+2)+2(1-x)=19 | | x^2+5x+6.25=2.25 | | x^2-2.5x+1.5625=7.5625 | | x^2-2.5x+1.5625=0 | | .18(12)+.03x=.06(18+x) | | 24x=552 | | 5(3X-2)-3(7X-2)=4(5-X) | | 196-7x=38x+21 | | 6a-4(2-3(4a-3))=17 | | 6b+5=8b-21 | | 80-4x=14x+16 | | y=-(x^2/40)+31x/40+4/5 | | 4q+b(p-2)= | | -x-15=-4x-24 | | 5x²=2-2x: | | 3x+4=210 | | 5x²=2-2x | | 5x²=2x-2x | | 5x=2x-2x | | 3x(x-2)=7x+4x | | -12/(x^(2))+1.5x^(0.5)=0 | | 1/(-12x^(2))+1.5x^(0.5)=0 | | 1.8+6(3.6)+-3.2=7.6 |

Equations solver categories