(5x^2-7x)-(3x^2+2x+1)=

Simple and best practice solution for (5x^2-7x)-(3x^2+2x+1)= 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^2-7x)-(3x^2+2x+1)= equation:


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

Reorder the terms:
(-7x + 5x2) + -1(3x2 + 2x + 1) = 0

Remove parenthesis around (-7x + 5x2)
-7x + 5x2 + -1(3x2 + 2x + 1) = 0

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

Reorder the terms:
-1 + -7x + -2x + 5x2 + -3x2 = 0

Combine like terms: -7x + -2x = -9x
-1 + -9x + 5x2 + -3x2 = 0

Combine like terms: 5x2 + -3x2 = 2x2
-1 + -9x + 2x2 = 0

Solving
-1 + -9x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-0.5 + -4.5x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -4.5x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -4.5x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -4.5x + x2 = 0 + 0.5
-4.5x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-4.5x + x2 = 0.5

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = 0.5 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = 0.5 + 5.0625

Combine like terms: 0.5 + 5.0625 = 5.5625
5.0625 + -4.5x + x2 = 5.5625

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 5.5625

Calculate the square root of the right side: 2.358495283

Break this problem into two subproblems by setting 
(x + -2.25) equal to 2.358495283 and -2.358495283.

Subproblem 1

x + -2.25 = 2.358495283 Simplifying x + -2.25 = 2.358495283 Reorder the terms: -2.25 + x = 2.358495283 Solving -2.25 + x = 2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 2.358495283 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 2.358495283 + 2.25 x = 2.358495283 + 2.25 Combine like terms: 2.358495283 + 2.25 = 4.608495283 x = 4.608495283 Simplifying x = 4.608495283

Subproblem 2

x + -2.25 = -2.358495283 Simplifying x + -2.25 = -2.358495283 Reorder the terms: -2.25 + x = -2.358495283 Solving -2.25 + x = -2.358495283 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -2.358495283 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -2.358495283 + 2.25 x = -2.358495283 + 2.25 Combine like terms: -2.358495283 + 2.25 = -0.108495283 x = -0.108495283 Simplifying x = -0.108495283

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.608495283, -0.108495283}

See similar equations:

| 5.6q-5.6-4.7q=-0.1q-2.6 | | 2x-41=-13 | | 209-4x=41x+19 | | 6m-8=2+9-1 | | 15+4k-6+6k=k-3-6 | | x^2+y^2+4x-6y+4=0 | | 15+2x=5x-8x | | (x^2+8x)+(y^2-18y)=-16 | | 3y+2y+8y+27-12y-16= | | -6r-5r=-8-7r-3r | | (2/5)x-7=-11 | | b+8-8b=-3b-12 | | 3(9x-4)=242 | | -4x-9=-8-5x | | 3a+4ax=5a | | 12s^2-10s=2s | | 6m-2=8+8m | | x-57=125 | | x-4+5=-6 | | 67-(5x+10)=5(x+7)+x | | -3k+2k=1 | | (3a+7)-(a-1)=14 | | 27/-3= | | -18=-n-8n | | r-20=-25 | | .40(80)+.10x=.30(x+80) | | 12k-2k+3-4k-12= | | 2=x-3-6x | | x+8=8-8x | | 3(t-5)+7t=5(2t+5)-12 | | X+5=3(5x-1) | | -5+n=15 |

Equations solver categories