4x-1.2x^2-11x-30=0

Simple and best practice solution for 4x-1.2x^2-11x-30=0 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 4x-1.2x^2-11x-30=0 equation:


Simplifying
4x + -1.2x2 + -11x + -30 = 0

Reorder the terms:
-30 + 4x + -11x + -1.2x2 = 0

Combine like terms: 4x + -11x = -7x
-30 + -7x + -1.2x2 = 0

Solving
-30 + -7x + -1.2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1.2 the coefficient of the squared term: 

Divide each side by '-1.2'.
25 + 5.833333333x + x2 = 0

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + 5.833333333x + -25 + x2 = 0 + -25

Reorder the terms:
25 + -25 + 5.833333333x + x2 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + 5.833333333x + x2 = 0 + -25
5.833333333x + x2 = 0 + -25

Combine like terms: 0 + -25 = -25
5.833333333x + x2 = -25

The x term is 5.833333333x.  Take half its coefficient (2.916666667).
Square it (8.506944446) and add it to both sides.

Add '8.506944446' to each side of the equation.
5.833333333x + 8.506944446 + x2 = -25 + 8.506944446

Reorder the terms:
8.506944446 + 5.833333333x + x2 = -25 + 8.506944446

Combine like terms: -25 + 8.506944446 = -16.493055554
8.506944446 + 5.833333333x + x2 = -16.493055554

Factor a perfect square on the left side:
(x + 2.916666667)(x + 2.916666667) = -16.493055554

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4(x-8)-2(x-1)+7x=x | | 1/4+2/5+3/7=x | | 83/140=x | | -6-2y=-6 | | 14-4p=12p+6 | | 70/4=x | | -2(5-(-2))+1=x | | 3(7+3)-4=x | | t^2+t-56=0 | | 1.2x^2-11x-30=4x | | -x^3+2x-1=0 | | 1.1x^2-8x-200=6x+4 | | (-2x^2)-14x+16/3x^2+15x-72 | | y=3x+38 | | -5x=7/6 | | 1/3+1/5=x | | (-2x2)-14x+16/3x2+15x-72 | | -6y=-7 | | 35+7y=35 | | 5x+35=35 | | 4r+16/8=4r-16/4 | | x/2=x+7/4 | | z/4=z+1/6 | | 5a(7a-5)=0 | | 2s+2w+2b=12 | | 5x+14=35 | | 6a^2+6a-12=0 | | 57+5y-15=15y-14-2y | | 7s+5w+7b=36 | | x+36=28+35 | | t^2+13t+42=0 | | x+36=28 |

Equations solver categories