4x^2-12x+9=5x+2

Simple and best practice solution for 4x^2-12x+9=5x+2 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 4x^2-12x+9=5x+2 equation:


Simplifying
4x2 + -12x + 9 = 5x + 2

Reorder the terms:
9 + -12x + 4x2 = 5x + 2

Reorder the terms:
9 + -12x + 4x2 = 2 + 5x

Solving
9 + -12x + 4x2 = 2 + 5x

Solving for variable 'x'.

Reorder the terms:
9 + -2 + -12x + -5x + 4x2 = 2 + 5x + -2 + -5x

Combine like terms: 9 + -2 = 7
7 + -12x + -5x + 4x2 = 2 + 5x + -2 + -5x

Combine like terms: -12x + -5x = -17x
7 + -17x + 4x2 = 2 + 5x + -2 + -5x

Reorder the terms:
7 + -17x + 4x2 = 2 + -2 + 5x + -5x

Combine like terms: 2 + -2 = 0
7 + -17x + 4x2 = 0 + 5x + -5x
7 + -17x + 4x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
7 + -17x + 4x2 = 0

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

Divide each side by '4'.
1.75 + -4.25x + x2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + -4.25x + -1.75 + x2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + -4.25x + x2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + -4.25x + x2 = 0 + -1.75
-4.25x + x2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
-4.25x + x2 = -1.75

The x term is -4.25x.  Take half its coefficient (-2.125).
Square it (4.515625) and add it to both sides.

Add '4.515625' to each side of the equation.
-4.25x + 4.515625 + x2 = -1.75 + 4.515625

Reorder the terms:
4.515625 + -4.25x + x2 = -1.75 + 4.515625

Combine like terms: -1.75 + 4.515625 = 2.765625
4.515625 + -4.25x + x2 = 2.765625

Factor a perfect square on the left side:
(x + -2.125)(x + -2.125) = 2.765625

Calculate the square root of the right side: 1.663016837

Break this problem into two subproblems by setting 
(x + -2.125) equal to 1.663016837 and -1.663016837.

Subproblem 1

x + -2.125 = 1.663016837 Simplifying x + -2.125 = 1.663016837 Reorder the terms: -2.125 + x = 1.663016837 Solving -2.125 + x = 1.663016837 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = 1.663016837 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = 1.663016837 + 2.125 x = 1.663016837 + 2.125 Combine like terms: 1.663016837 + 2.125 = 3.788016837 x = 3.788016837 Simplifying x = 3.788016837

Subproblem 2

x + -2.125 = -1.663016837 Simplifying x + -2.125 = -1.663016837 Reorder the terms: -2.125 + x = -1.663016837 Solving -2.125 + x = -1.663016837 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = -1.663016837 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = -1.663016837 + 2.125 x = -1.663016837 + 2.125 Combine like terms: -1.663016837 + 2.125 = 0.461983163 x = 0.461983163 Simplifying x = 0.461983163

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.788016837, 0.461983163}

See similar equations:

| (t-3)-(t-2)=5 | | c^2-8c+20=0 | | -13=-4+d | | 3x^2+8=128 | | 3+5x-2(3x+7)=2x+4 | | x^2+13+36= | | 99=11(q+4) | | C-2=-12 | | 39=13(x-8) | | F(-4)=0.5n+3 | | x^2-14x+y^2+2y+50=0 | | -28=2c-7-6c | | tan^2(x-3)=0 | | x^2-4-x+2=0 | | 5-x+7x=11 | | -4(v-1)=16 | | 2(x-5)=4(3+8x) | | 4(2x+8)=76 | | 8(x-3)+8=5x-12 | | 4(5x-8)=7(3+6x) | | 22-5(6x-1)=67 | | ln(2x-3)+ln(x-2)=2lnz | | 12x+10=3(3x+6) | | 3y-8=15 | | 53=0.4(53)-8 | | 412=28+12r | | 2x+5=3(4x+1)-11x | | 6(x+7)=3-3x+15x+3 | | -11x+38=39 | | 0=-2(8x^2+5x-42) | | 3-0.3=2.7 | | h-6=5h+26 |

Equations solver categories