2x^2-5x+9=0

Simple and best practice solution for 2x^2-5x+9=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 2x^2-5x+9=0 equation:


Simplifying
2x2 + -5x + 9 = 0

Reorder the terms:
9 + -5x + 2x2 = 0

Solving
9 + -5x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
4.5 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-4.5' to each side of the equation.
4.5 + -2.5x + -4.5 + x2 = 0 + -4.5

Reorder the terms:
4.5 + -4.5 + -2.5x + x2 = 0 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + -2.5x + x2 = 0 + -4.5
-2.5x + x2 = 0 + -4.5

Combine like terms: 0 + -4.5 = -4.5
-2.5x + x2 = -4.5

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -4.5 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -4.5 + 1.5625

Combine like terms: -4.5 + 1.5625 = -2.9375
1.5625 + -2.5x + x2 = -2.9375

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = -2.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -4q-2=-1.6 | | 16x-4= | | 7x+4=6-5x | | c/5+6=-2 | | (.333x*.12)+(.333x*.15)+(.333x)=10800 | | t^2+5t=2t^2+10 | | 5y+3-2y-15=21 | | 3n+12=5n+5 | | 4b^2+4b-24=0 | | -8-2k=-8(1-7k)+k | | 15x^2+22x=0 | | 4k+8=3k+15 | | -10t+5=7 | | 8w-11=5 | | (x+42)*x=400 | | 7y-9=3y+15 | | -3m+8m=4 | | 5t-10=t+10 | | 40=5(3x-1) | | 44x+22+43x-71= | | 4x-26=10-5x | | 9p+6=3p+24 | | t(t+5)=2t^2+10 | | 2x-12=7x+8 | | Ln(x+1)+(x-1)=4 | | -3x-0.7=-7 | | 44x+22=43x-71 | | 4x+8=3x+11 | | 6x^2=108 | | -2x+12=24 | | (4+2x)*4=(3+[3x+1])*3 | | 4y-y+5y= |

Equations solver categories