4x^2+5x=-11

Simple and best practice solution for 4x^2+5x=-11 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^2+5x=-11 equation:


Simplifying
4x2 + 5x = -11

Reorder the terms:
5x + 4x2 = -11

Solving
5x + 4x2 = -11

Solving for variable 'x'.

Reorder the terms:
11 + 5x + 4x2 = -11 + 11

Combine like terms: -11 + 11 = 0
11 + 5x + 4x2 = 0

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

Divide each side by '4'.
2.75 + 1.25x + x2 = 0

Move the constant term to the right:

Add '-2.75' to each side of the equation.
2.75 + 1.25x + -2.75 + x2 = 0 + -2.75

Reorder the terms:
2.75 + -2.75 + 1.25x + x2 = 0 + -2.75

Combine like terms: 2.75 + -2.75 = 0.00
0.00 + 1.25x + x2 = 0 + -2.75
1.25x + x2 = 0 + -2.75

Combine like terms: 0 + -2.75 = -2.75
1.25x + x2 = -2.75

The x term is 1.25x.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25x + 0.390625 + x2 = -2.75 + 0.390625

Reorder the terms:
0.390625 + 1.25x + x2 = -2.75 + 0.390625

Combine like terms: -2.75 + 0.390625 = -2.359375
0.390625 + 1.25x + x2 = -2.359375

Factor a perfect square on the left side:
(x + 0.625)(x + 0.625) = -2.359375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| y-5.34=x/2-x×.15 | | 6x^2+12=5x+3 | | 7-4n-10+n=12 | | 5x-(3+x)=x+5(x-4) | | 7x=2x^2-9 | | 18x+10(12-x)=200 | | 5x+13=7x+13 | | 18-n=-4 | | 23+m=10 | | 7w-1=-50 | | 7-2a=15-6a | | 6(x+2)+10=16-x+27 | | 9x^2=55 | | 17x-6=12x+39 | | 10=38y-36x | | 35+x+90=180 | | -6(4-t)=10y | | (3x)/(x-2)^3 | | 7x-8y-3=0 | | 6=3p-4-p | | 8d-1/39(6-9d)=42 | | 2a+20=12a | | 1.5x+.75y=100 | | 3y-10y^2=0 | | 3-4-7=a | | 4x+10-3x=8+3x-6 | | A=p(l+prt) | | 7c-42=8c-56 | | 8+5(-2)=-2 | | A=p(l+prt)fort | | 120=10xm | | Y-2x/3-1=0 |

Equations solver categories