(3x^2+2x-6)-(x^2-x+2)=

Simple and best practice solution for (3x^2+2x-6)-(x^2-x+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 (3x^2+2x-6)-(x^2-x+2)= equation:


Simplifying
(3x2 + 2x + -6) + -1(x2 + -1x + 2) = 0

Reorder the terms:
(-6 + 2x + 3x2) + -1(x2 + -1x + 2) = 0

Remove parenthesis around (-6 + 2x + 3x2)
-6 + 2x + 3x2 + -1(x2 + -1x + 2) = 0

Reorder the terms:
-6 + 2x + 3x2 + -1(2 + -1x + x2) = 0
-6 + 2x + 3x2 + (2 * -1 + -1x * -1 + x2 * -1) = 0
-6 + 2x + 3x2 + (-2 + 1x + -1x2) = 0

Reorder the terms:
-6 + -2 + 2x + 1x + 3x2 + -1x2 = 0

Combine like terms: -6 + -2 = -8
-8 + 2x + 1x + 3x2 + -1x2 = 0

Combine like terms: 2x + 1x = 3x
-8 + 3x + 3x2 + -1x2 = 0

Combine like terms: 3x2 + -1x2 = 2x2
-8 + 3x + 2x2 = 0

Solving
-8 + 3x + 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'.
-4 + 1.5x + x2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 1.5x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 1.5x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 1.5x + x2 = 0 + 4
1.5x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
1.5x + x2 = 4

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 4 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 4 + 0.5625

Combine like terms: 4 + 0.5625 = 4.5625
0.5625 + 1.5x + x2 = 4.5625

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 4.5625

Calculate the square root of the right side: 2.136000936

Break this problem into two subproblems by setting 
(x + 0.75) equal to 2.136000936 and -2.136000936.

Subproblem 1

x + 0.75 = 2.136000936 Simplifying x + 0.75 = 2.136000936 Reorder the terms: 0.75 + x = 2.136000936 Solving 0.75 + x = 2.136000936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 2.136000936 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 2.136000936 + -0.75 x = 2.136000936 + -0.75 Combine like terms: 2.136000936 + -0.75 = 1.386000936 x = 1.386000936 Simplifying x = 1.386000936

Subproblem 2

x + 0.75 = -2.136000936 Simplifying x + 0.75 = -2.136000936 Reorder the terms: 0.75 + x = -2.136000936 Solving 0.75 + x = -2.136000936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -2.136000936 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -2.136000936 + -0.75 x = -2.136000936 + -0.75 Combine like terms: -2.136000936 + -0.75 = -2.886000936 x = -2.886000936 Simplifying x = -2.886000936

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.386000936, -2.886000936}

See similar equations:

| 12xy-28x-15y+35=0 | | 5=2n-6 | | 250+30x=400+30x | | 9=81x | | y=6+-5+x^2 | | (3x+1)/7-(7-2x)/3=3*(4-6x)/2+12 | | 17=3(w+7)-5w | | 6n+15=42 | | 4x^2+6Y+2=0 | | 1n+7=35 | | 7.96*-100= | | 4x^2+24x-84=0 | | 5(n-2)=17 | | 2(2x-2)-(3x+1)=3(5-x) | | 3n*12=20 | | -6(4+2x)-7x=x-24 | | -8a+3=9+10a | | Log(9x)-log(2x-5)=log(6) | | -4+2x=-8 | | (4-5i)(4+5i)=0 | | 3m+21=4(m+4) | | 5(x-5)=25 | | 7x-(3x+1)=19 | | 8x+4(4c-3)=4(6+4)-4 | | -2xcubed+16xsquared+18x=0 | | 100x^2-400=0 | | 4.5y=2.5y+14 | | 6(x-3)-2(x-2)=10 | | 8n+24=2d+22 | | 1-2*(3x-1)/5=(x+8)/6-(4x-2)/3 | | 2m^2+20m+48=0 | | x-4+4x=6x+9-8 |

Equations solver categories