(6+4x^2-5x)+(7x+5x^2-12)=

Simple and best practice solution for (6+4x^2-5x)+(7x+5x^2-12)= 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 (6+4x^2-5x)+(7x+5x^2-12)= equation:


Simplifying
(6 + 4x2 + -5x) + (7x + 5x2 + -12) = 0

Reorder the terms:
(6 + -5x + 4x2) + (7x + 5x2 + -12) = 0

Remove parenthesis around (6 + -5x + 4x2)
6 + -5x + 4x2 + (7x + 5x2 + -12) = 0

Reorder the terms:
6 + -5x + 4x2 + (-12 + 7x + 5x2) = 0

Remove parenthesis around (-12 + 7x + 5x2)
6 + -5x + 4x2 + -12 + 7x + 5x2 = 0

Reorder the terms:
6 + -12 + -5x + 7x + 4x2 + 5x2 = 0

Combine like terms: 6 + -12 = -6
-6 + -5x + 7x + 4x2 + 5x2 = 0

Combine like terms: -5x + 7x = 2x
-6 + 2x + 4x2 + 5x2 = 0

Combine like terms: 4x2 + 5x2 = 9x2
-6 + 2x + 9x2 = 0

Solving
-6 + 2x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-0.6666666667 + 0.2222222222x + x2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + 0.2222222222x + 0.6666666667 + x2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + 0.2222222222x + x2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + 0.2222222222x + x2 = 0 + 0.6666666667
0.2222222222x + x2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
0.2222222222x + x2 = 0.6666666667

The x term is 0.2222222222x.  Take half its coefficient (0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
0.2222222222x + 0.01234567901 + x2 = 0.6666666667 + 0.01234567901

Reorder the terms:
0.01234567901 + 0.2222222222x + x2 = 0.6666666667 + 0.01234567901

Combine like terms: 0.6666666667 + 0.01234567901 = 0.67901234571
0.01234567901 + 0.2222222222x + x2 = 0.67901234571

Factor a perfect square on the left side:
(x + 0.1111111111)(x + 0.1111111111) = 0.67901234571

Calculate the square root of the right side: 0.824022054

Break this problem into two subproblems by setting 
(x + 0.1111111111) equal to 0.824022054 and -0.824022054.

Subproblem 1

x + 0.1111111111 = 0.824022054 Simplifying x + 0.1111111111 = 0.824022054 Reorder the terms: 0.1111111111 + x = 0.824022054 Solving 0.1111111111 + x = 0.824022054 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = 0.824022054 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = 0.824022054 + -0.1111111111 x = 0.824022054 + -0.1111111111 Combine like terms: 0.824022054 + -0.1111111111 = 0.7129109429 x = 0.7129109429 Simplifying x = 0.7129109429

Subproblem 2

x + 0.1111111111 = -0.824022054 Simplifying x + 0.1111111111 = -0.824022054 Reorder the terms: 0.1111111111 + x = -0.824022054 Solving 0.1111111111 + x = -0.824022054 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = -0.824022054 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = -0.824022054 + -0.1111111111 x = -0.824022054 + -0.1111111111 Combine like terms: -0.824022054 + -0.1111111111 = -0.9351331651 x = -0.9351331651 Simplifying x = -0.9351331651

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.7129109429, -0.9351331651}

See similar equations:

| 5=-.125a | | 12(x-9)=-4-8 | | 10x+9(x-9/10) | | 8+3(7^2x4)-5/2 | | (6+-12x)=18 | | 1.8-3.7x=-4.2x+0.3 | | -(5xy-8)+4(6xy+8)= | | 2.9(x+4.1)-9.9=6(x+1)-13 | | 2a-2/5=6 | | 5/x-4=6/x-2 | | x+3/3-4x=-2/5 | | 66/10 | | 7/x=2/3 | | x-3/2-3x+1/4=2x+6/8 | | 2c+4s+7a=240 | | n/6=24/32 | | x^2+3.5x-350=0 | | 5y+3(-3)=1 | | 8n=7n+4 | | x+3/2-4x=-2/5 | | -3/4-5 | | x=1/4x+3/4 | | 6(x+4)=(4x-2) | | -33=6u+3(u-5) | | 116-2x=10x+24 | | 5+2(2x-7)=0 | | 4*(x-4)=5+x | | y/1.4=5 | | 14=7(x+6)+7x | | x+3/2-4=-2/5 | | 3q^2+4q-20=0 | | 2x=[(4x+16)-4][(4x+16)-4] |

Equations solver categories