-5x+9+2x^2=0

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


Simplifying
-5x + 9 + 2x2 = 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:

| 8(3m+2)=4(5m+10) | | -12x+13x=5(2x+1)+13 | | 8(x+1)+4x=20 | | 4-4=3z-2z | | -85+8y+7=3(5y-4)-3 | | 2x+24=58 | | 3x^2+22x+32=0 | | 9x^2+4-x-2=4 | | 9x^2+4-x-2=2 | | 3+5=x-15 | | (2x+7)(x-3)= | | 16x^2-32x+12=0 | | 3x+24=x^2+4x+4 | | x(x+6)(x-5)=0 | | 8x-14x=18 | | 20a^2-41a+20=0 | | 5x^2+x-3=0 | | 16x^2=8-4x | | a^2-4a=16 | | 25x^4+71x^2-12=0 | | 3x+4=-x^2 | | (x-3)(x-12)=-20 | | 9y^2-6y+4=0 | | 4y^2-36y=0 | | 2(x-3)-3(x+2)=x+2 | | 9-25+23+4y^2-y^2=0 | | c-0.25c=42 | | w^2+8w+6=0 | | 218-7x=29x+22 | | -2x+18=42 | | 3m^2-1=-8 | | (4y^2+9)-(y^2+25)+23=0 |

Equations solver categories