5x^2+4=3x+9

Simple and best practice solution for 5x^2+4=3x+9 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+4=3x+9 equation:


Simplifying
5x2 + 4 = 3x + 9

Reorder the terms:
4 + 5x2 = 3x + 9

Reorder the terms:
4 + 5x2 = 9 + 3x

Solving
4 + 5x2 = 9 + 3x

Solving for variable 'x'.

Reorder the terms:
4 + -9 + -3x + 5x2 = 9 + 3x + -9 + -3x

Combine like terms: 4 + -9 = -5
-5 + -3x + 5x2 = 9 + 3x + -9 + -3x

Reorder the terms:
-5 + -3x + 5x2 = 9 + -9 + 3x + -3x

Combine like terms: 9 + -9 = 0
-5 + -3x + 5x2 = 0 + 3x + -3x
-5 + -3x + 5x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-5 + -3x + 5x2 = 0

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

Divide each side by '5'.
-1 + -0.6x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -0.6x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -0.6x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -0.6x + x2 = 0 + 1
-0.6x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-0.6x + x2 = 1

The x term is -0.6x.  Take half its coefficient (-0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
-0.6x + 0.09 + x2 = 1 + 0.09

Reorder the terms:
0.09 + -0.6x + x2 = 1 + 0.09

Combine like terms: 1 + 0.09 = 1.09
0.09 + -0.6x + x2 = 1.09

Factor a perfect square on the left side:
(x + -0.3)(x + -0.3) = 1.09

Calculate the square root of the right side: 1.044030651

Break this problem into two subproblems by setting 
(x + -0.3) equal to 1.044030651 and -1.044030651.

Subproblem 1

x + -0.3 = 1.044030651 Simplifying x + -0.3 = 1.044030651 Reorder the terms: -0.3 + x = 1.044030651 Solving -0.3 + x = 1.044030651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + x = 1.044030651 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + x = 1.044030651 + 0.3 x = 1.044030651 + 0.3 Combine like terms: 1.044030651 + 0.3 = 1.344030651 x = 1.344030651 Simplifying x = 1.344030651

Subproblem 2

x + -0.3 = -1.044030651 Simplifying x + -0.3 = -1.044030651 Reorder the terms: -0.3 + x = -1.044030651 Solving -0.3 + x = -1.044030651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + x = -1.044030651 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + x = -1.044030651 + 0.3 x = -1.044030651 + 0.3 Combine like terms: -1.044030651 + 0.3 = -0.744030651 x = -0.744030651 Simplifying x = -0.744030651

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.344030651, -0.744030651}

See similar equations:

| 3x-6y=-5 | | 1+4y=24 | | 5x^2=3x+9 | | y/2-5=5 | | -9(x+4)-3=-39 | | -3(x-4)=20 | | -12=4w-4 | | SinX=5/14 | | 5(2y+2)=2(5y+5) | | 3(3x-6)=2(x+5) | | 2(2x-4)=0 | | 3(2x+2)=2(3x-7) | | F(x)=X^4-6x^3+22x^2-30x+13 | | 3u+16=55 | | 7=7+6x-4-2x | | 1/5(2w+4)-5=w-6 | | x/2-12=23 | | 25=x/4-11 | | Y=-x^2+4x | | 2/3j-1/6=1/2 | | 3x+3=1x+11 | | 7x^2-3x+16=0 | | 2x+1=9-2x | | 3(y+2)-2y=8 | | 0.5A+0.25B= | | 5x+7+6x+8=180 | | 4x+10=146 | | 1x-2=1x+3 | | 5/x/ | | 48=8(6m-3)+8(m-5) | | loge(7x)=43 | | 10x-15(x-2)= |

Equations solver categories