9x+4=3x^2-0.75

Simple and best practice solution for 9x+4=3x^2-0.75 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 9x+4=3x^2-0.75 equation:


Simplifying
9x + 4 = 3x2 + -0.75

Reorder the terms:
4 + 9x = 3x2 + -0.75

Reorder the terms:
4 + 9x = -0.75 + 3x2

Solving
4 + 9x = -0.75 + 3x2

Solving for variable 'x'.

Reorder the terms:
4 + 0.75 + 9x + -3x2 = -0.75 + 3x2 + 0.75 + -3x2

Combine like terms: 4 + 0.75 = 4.75
4.75 + 9x + -3x2 = -0.75 + 3x2 + 0.75 + -3x2

Reorder the terms:
4.75 + 9x + -3x2 = -0.75 + 0.75 + 3x2 + -3x2

Combine like terms: -0.75 + 0.75 = 0.00
4.75 + 9x + -3x2 = 0.00 + 3x2 + -3x2
4.75 + 9x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
4.75 + 9x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-1.583333333 + -3x + x2 = 0

Move the constant term to the right:

Add '1.583333333' to each side of the equation.
-1.583333333 + -3x + 1.583333333 + x2 = 0 + 1.583333333

Reorder the terms:
-1.583333333 + 1.583333333 + -3x + x2 = 0 + 1.583333333

Combine like terms: -1.583333333 + 1.583333333 = 0.000000000
0.000000000 + -3x + x2 = 0 + 1.583333333
-3x + x2 = 0 + 1.583333333

Combine like terms: 0 + 1.583333333 = 1.583333333
-3x + x2 = 1.583333333

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 1.583333333 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 1.583333333 + 2.25

Combine like terms: 1.583333333 + 2.25 = 3.833333333
2.25 + -3x + x2 = 3.833333333

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 3.833333333

Calculate the square root of the right side: 1.957890021

Break this problem into two subproblems by setting 
(x + -1.5) equal to 1.957890021 and -1.957890021.

Subproblem 1

x + -1.5 = 1.957890021 Simplifying x + -1.5 = 1.957890021 Reorder the terms: -1.5 + x = 1.957890021 Solving -1.5 + x = 1.957890021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 1.957890021 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 1.957890021 + 1.5 x = 1.957890021 + 1.5 Combine like terms: 1.957890021 + 1.5 = 3.457890021 x = 3.457890021 Simplifying x = 3.457890021

Subproblem 2

x + -1.5 = -1.957890021 Simplifying x + -1.5 = -1.957890021 Reorder the terms: -1.5 + x = -1.957890021 Solving -1.5 + x = -1.957890021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -1.957890021 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -1.957890021 + 1.5 x = -1.957890021 + 1.5 Combine like terms: -1.957890021 + 1.5 = -0.457890021 x = -0.457890021 Simplifying x = -0.457890021

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.457890021, -0.457890021}

See similar equations:

| t-48=-48 | | -14+2n=2(n-7) | | 5x-8(4x-23)=22 | | 13+7x=3x+17 | | 5/6x=6 | | x^2+3x-9=5x-8 | | z/83 | | 7v^3+9v^2-10v=0 | | 18x+8=3x^2-0.75 | | 0.03-0.02(x+2)=-0.05(3-x) | | 3(2x-9)=36 | | 3r^3-8r^2-16r=0 | | 3r^3-18r^2-16r=0 | | 3(c-4)+8=5+c-9 | | p/65 | | -12+3=m-8 | | b/213 | | 43(x+4)=774 | | T=L(6+RS)forS | | 3n^2+26n+35=0 | | 9(5x+10)=10x-(-8+6x) | | x^2+44x+-40=0 | | x-4*8=20 | | -16+4n=-8(-4+2n)+3 | | 7v^2-70v+141=-6 | | 8*2=4 | | -2x+10=15 | | 10e+3= | | 4*2=8 | | 7n^3+19n^2-36n=0 | | 4(2x-4)+26=94 | | 8(3n+3)=7(7n+5)+2 |

Equations solver categories