5x^2=9x-1

Simple and best practice solution for 5x^2=9x-1 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^2=9x-1 equation:


Simplifying
5x2 = 9x + -1

Reorder the terms:
5x2 = -1 + 9x

Solving
5x2 = -1 + 9x

Solving for variable 'x'.

Reorder the terms:
1 + -9x + 5x2 = -1 + 9x + 1 + -9x

Reorder the terms:
1 + -9x + 5x2 = -1 + 1 + 9x + -9x

Combine like terms: -1 + 1 = 0
1 + -9x + 5x2 = 0 + 9x + -9x
1 + -9x + 5x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
1 + -9x + 5x2 = 0

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

Divide each side by '5'.
0.2 + -1.8x + x2 = 0

Move the constant term to the right:

Add '-0.2' to each side of the equation.
0.2 + -1.8x + -0.2 + x2 = 0 + -0.2

Reorder the terms:
0.2 + -0.2 + -1.8x + x2 = 0 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + -1.8x + x2 = 0 + -0.2
-1.8x + x2 = 0 + -0.2

Combine like terms: 0 + -0.2 = -0.2
-1.8x + x2 = -0.2

The x term is -1.8x.  Take half its coefficient (-0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
-1.8x + 0.81 + x2 = -0.2 + 0.81

Reorder the terms:
0.81 + -1.8x + x2 = -0.2 + 0.81

Combine like terms: -0.2 + 0.81 = 0.61
0.81 + -1.8x + x2 = 0.61

Factor a perfect square on the left side:
(x + -0.9)(x + -0.9) = 0.61

Calculate the square root of the right side: 0.781024968

Break this problem into two subproblems by setting 
(x + -0.9) equal to 0.781024968 and -0.781024968.

Subproblem 1

x + -0.9 = 0.781024968 Simplifying x + -0.9 = 0.781024968 Reorder the terms: -0.9 + x = 0.781024968 Solving -0.9 + x = 0.781024968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + x = 0.781024968 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + x = 0.781024968 + 0.9 x = 0.781024968 + 0.9 Combine like terms: 0.781024968 + 0.9 = 1.681024968 x = 1.681024968 Simplifying x = 1.681024968

Subproblem 2

x + -0.9 = -0.781024968 Simplifying x + -0.9 = -0.781024968 Reorder the terms: -0.9 + x = -0.781024968 Solving -0.9 + x = -0.781024968 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + x = -0.781024968 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + x = -0.781024968 + 0.9 x = -0.781024968 + 0.9 Combine like terms: -0.781024968 + 0.9 = 0.118975032 x = 0.118975032 Simplifying x = 0.118975032

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.681024968, 0.118975032}

See similar equations:

| 1996+45w=7385-67w | | 1/2=(-4/3)u-1/5 | | 5h+8=53 | | 5(3x-6)-(3x-2)=x-6 | | 5=66n+5 | | 5x=5x-252 | | x(t)=2t^3+4t^2-5 | | -5g+7=32 | | 6p^2-5=-90 | | 9m^2+4=5 | | H(t)=-16t^2+39 | | 2x+5+3=6findx | | 1/5=x/15 | | 5=12-4Q | | cos(7x)-cos(4x)= | | 7x^2+7=21 | | 10n^2+9=49 | | 2x+y=435 | | 4x^2+10x+9=5 | | (273+(-1.7x))+26x=4100 | | 4b-2=38 | | n^2=-6+5n | | 130=13x-2 | | 146=6x+7 | | 26x+15Y=4100 | | 3x+4=3x-3 | | 12x+6=17x-26 | | 122=40x+2 | | 5(84-.6y)+3y=420 | | 12x+96=264 | | ln(x^2-5x-5)=0 | | 1x+5x=0 |

Equations solver categories