-4x^2+23x-72=0

Simple and best practice solution for -4x^2+23x-72=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^2+23x-72=0 equation:


Simplifying
-4x2 + 23x + -72 = 0

Reorder the terms:
-72 + 23x + -4x2 = 0

Solving
-72 + 23x + -4x2 = 0

Solving for variable 'x'.

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

Divide each side by '-4'.
18 + -5.75x + x2 = 0

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + -5.75x + -18 + x2 = 0 + -18

Reorder the terms:
18 + -18 + -5.75x + x2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -5.75x + x2 = 0 + -18
-5.75x + x2 = 0 + -18

Combine like terms: 0 + -18 = -18
-5.75x + x2 = -18

The x term is -5.75x.  Take half its coefficient (-2.875).
Square it (8.265625) and add it to both sides.

Add '8.265625' to each side of the equation.
-5.75x + 8.265625 + x2 = -18 + 8.265625

Reorder the terms:
8.265625 + -5.75x + x2 = -18 + 8.265625

Combine like terms: -18 + 8.265625 = -9.734375
8.265625 + -5.75x + x2 = -9.734375

Factor a perfect square on the left side:
(x + -2.875)(x + -2.875) = -9.734375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -7x-9=-199+3x | | 1/2(2x-4)=-(5x+2) | | -3x^4y/12Y | | 6n+2n=-13+1-n-6 | | 8s-(5s+6)=(20+6s) | | 6x-18=9x+13 | | 7d-d+3e=12 | | 4x^2+5=789 | | 9=4h+4w | | -10=xy+yforx | | 8s-(5s+6)= | | f(x)=7x+14 | | -9(x-5)=x+22(.5) | | 1/2*g-3=23 | | 8.85(2.79)= | | .2x-1.4=6.8 | | X+4h+(x+20m)+2h=250mh | | (S+12)(s-2)= | | 12+n=2 | | (1/2)g-3=23 | | 22-6k=2k-7(b+1) | | -3^2x^4y^2/12^2y^2 | | 5p+24=3p-12 | | 3x=7/3 | | .5+32=15+6g | | 1+6x=11+4x | | 3x-9-8+12x=2-4x | | 5/2x=2 | | X+4hrs+(x+20mph)+2hrs=250miles | | 8.3*0.18= | | 1/2+32=15+6g | | -1=x/5-8 |

Equations solver categories