2(x^2-7x+5)-(3x^2-4x+9)=

Simple and best practice solution for 2(x^2-7x+5)-(3x^2-4x+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 2(x^2-7x+5)-(3x^2-4x+9)= equation:


Simplifying
2(x2 + -7x + 5) + -1(3x2 + -4x + 9) = 0

Reorder the terms:
2(5 + -7x + x2) + -1(3x2 + -4x + 9) = 0
(5 * 2 + -7x * 2 + x2 * 2) + -1(3x2 + -4x + 9) = 0
(10 + -14x + 2x2) + -1(3x2 + -4x + 9) = 0

Reorder the terms:
10 + -14x + 2x2 + -1(9 + -4x + 3x2) = 0
10 + -14x + 2x2 + (9 * -1 + -4x * -1 + 3x2 * -1) = 0
10 + -14x + 2x2 + (-9 + 4x + -3x2) = 0

Reorder the terms:
10 + -9 + -14x + 4x + 2x2 + -3x2 = 0

Combine like terms: 10 + -9 = 1
1 + -14x + 4x + 2x2 + -3x2 = 0

Combine like terms: -14x + 4x = -10x
1 + -10x + 2x2 + -3x2 = 0

Combine like terms: 2x2 + -3x2 = -1x2
1 + -10x + -1x2 = 0

Solving
1 + -10x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-1 + 10x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 10x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 10x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 10x + x2 = 0 + 1
10x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
10x + x2 = 1

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 1 + 25

Reorder the terms:
25 + 10x + x2 = 1 + 25

Combine like terms: 1 + 25 = 26
25 + 10x + x2 = 26

Factor a perfect square on the left side:
(x + 5)(x + 5) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(x + 5) equal to 5.099019514 and -5.099019514.

Subproblem 1

x + 5 = 5.099019514 Simplifying x + 5 = 5.099019514 Reorder the terms: 5 + x = 5.099019514 Solving 5 + x = 5.099019514 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 5.099019514 + -5 Combine like terms: 5 + -5 = 0 0 + x = 5.099019514 + -5 x = 5.099019514 + -5 Combine like terms: 5.099019514 + -5 = 0.099019514 x = 0.099019514 Simplifying x = 0.099019514

Subproblem 2

x + 5 = -5.099019514 Simplifying x + 5 = -5.099019514 Reorder the terms: 5 + x = -5.099019514 Solving 5 + x = -5.099019514 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -5.099019514 + -5 Combine like terms: 5 + -5 = 0 0 + x = -5.099019514 + -5 x = -5.099019514 + -5 Combine like terms: -5.099019514 + -5 = -10.099019514 x = -10.099019514 Simplifying x = -10.099019514

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.099019514, -10.099019514}

See similar equations:

| 7=p+3 | | 6.5/5h+5=11.5 | | 2d+6=18 | | m/4=-2.25 | | 4+2(m+3)=28 | | 6(m+5)=-6 | | 6m-7/10=m/4 | | 2c-d=c-2d | | (7m^3-12m)-2(3m^2+9)= | | -5n-3n=4-36 | | m/4*10 | | 14x-12(9x-2)=682 | | 14x-2(9x-2)=682 | | 2x(x^4+4x+3)=3x^4+7x^3+4 | | 2x^5-3x^4-7x^3+8x^2+6x-4=0 | | 3+(2x-5)=9 | | 5*3.5= | | 6x^2+20x-30=0 | | (2/5x)+(6/5)=11 | | 2x+70-3x=(-5x+7)2 | | 4/5x-4-2x=3/5(x+4) | | x-3=8x-32 | | 2a-7/3=7 | | h+9=5 | | (3p^2-5p+3)+(8p^2-6p)= | | 90-9y+6y=180 | | -5d+3(d-4)=12-2d | | -5d+3(d-4)=12-d | | 2x-7-6x-12= | | (3/2x)-(7/6)=1 | | -45-9x=-10-2x | | -5d+3(d-4)=2(6-d) |

Equations solver categories