(2k^2-k+3)+(5k^2+3k-7)=

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


Simplifying
(2k2 + -1k + 3) + (5k2 + 3k + -7) = 0

Reorder the terms:
(3 + -1k + 2k2) + (5k2 + 3k + -7) = 0

Remove parenthesis around (3 + -1k + 2k2)
3 + -1k + 2k2 + (5k2 + 3k + -7) = 0

Reorder the terms:
3 + -1k + 2k2 + (-7 + 3k + 5k2) = 0

Remove parenthesis around (-7 + 3k + 5k2)
3 + -1k + 2k2 + -7 + 3k + 5k2 = 0

Reorder the terms:
3 + -7 + -1k + 3k + 2k2 + 5k2 = 0

Combine like terms: 3 + -7 = -4
-4 + -1k + 3k + 2k2 + 5k2 = 0

Combine like terms: -1k + 3k = 2k
-4 + 2k + 2k2 + 5k2 = 0

Combine like terms: 2k2 + 5k2 = 7k2
-4 + 2k + 7k2 = 0

Solving
-4 + 2k + 7k2 = 0

Solving for variable 'k'.

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

Divide each side by '7'.
-0.5714285714 + 0.2857142857k + k2 = 0

Move the constant term to the right:

Add '0.5714285714' to each side of the equation.
-0.5714285714 + 0.2857142857k + 0.5714285714 + k2 = 0 + 0.5714285714

Reorder the terms:
-0.5714285714 + 0.5714285714 + 0.2857142857k + k2 = 0 + 0.5714285714

Combine like terms: -0.5714285714 + 0.5714285714 = 0.0000000000
0.0000000000 + 0.2857142857k + k2 = 0 + 0.5714285714
0.2857142857k + k2 = 0 + 0.5714285714

Combine like terms: 0 + 0.5714285714 = 0.5714285714
0.2857142857k + k2 = 0.5714285714

The k term is 0.2857142857k.  Take half its coefficient (0.1428571429).
Square it (0.02040816328) and add it to both sides.

Add '0.02040816328' to each side of the equation.
0.2857142857k + 0.02040816328 + k2 = 0.5714285714 + 0.02040816328

Reorder the terms:
0.02040816328 + 0.2857142857k + k2 = 0.5714285714 + 0.02040816328

Combine like terms: 0.5714285714 + 0.02040816328 = 0.59183673468
0.02040816328 + 0.2857142857k + k2 = 0.59183673468

Factor a perfect square on the left side:
(k + 0.1428571429)(k + 0.1428571429) = 0.59183673468

Calculate the square root of the right side: 0.769309258

Break this problem into two subproblems by setting 
(k + 0.1428571429) equal to 0.769309258 and -0.769309258.

Subproblem 1

k + 0.1428571429 = 0.769309258 Simplifying k + 0.1428571429 = 0.769309258 Reorder the terms: 0.1428571429 + k = 0.769309258 Solving 0.1428571429 + k = 0.769309258 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + k = 0.769309258 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + k = 0.769309258 + -0.1428571429 k = 0.769309258 + -0.1428571429 Combine like terms: 0.769309258 + -0.1428571429 = 0.6264521151 k = 0.6264521151 Simplifying k = 0.6264521151

Subproblem 2

k + 0.1428571429 = -0.769309258 Simplifying k + 0.1428571429 = -0.769309258 Reorder the terms: 0.1428571429 + k = -0.769309258 Solving 0.1428571429 + k = -0.769309258 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + k = -0.769309258 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + k = -0.769309258 + -0.1428571429 k = -0.769309258 + -0.1428571429 Combine like terms: -0.769309258 + -0.1428571429 = -0.9121664009 k = -0.9121664009 Simplifying k = -0.9121664009

Solution

The solution to the problem is based on the solutions from the subproblems. k = {0.6264521151, -0.9121664009}

See similar equations:

| sqrt(5x-1)-sqrt(3x-2)=sqrt(x-1) | | 5(8x)=325 | | (x+2)*(x+1)=(x+1) | | 3(x-5)=21x | | .6667h-5=h+7 | | 8x+5=3-4z | | 12+3(6x+10)+7x= | | 4x-5-7x-7= | | Tgx=0.45 | | (6a^4+a^2)-(2a^3+4a^2-a)= | | 7(3x+4)-9=5x | | 5(x+3)=-125 | | 6(2-d)= | | 4x-7+3x=4 | | t+7=-20 | | (6x^3+17)-(4x^3+9)= | | 8x-8x+2=5x-11 | | (7+4i)(7-4i)= | | 3+X=196 | | (u^2)*(-6uv^2)= | | 4b^2-4=-3b | | 0.06-0.03(x+1)=0.01(1-x) | | 7(5m+7(n+8p))+2n= | | 11x^2+7x-10=5 | | 4(y+8)=-32+4y | | -16x^2+32x-80=0 | | 4+3(p-2)=64 | | 2x-5-11x-8= | | (u^2)(-6uv^2)= | | 2x+9=12x-81 | | 38-a*11=34 | | 10x-61=18y+5 |

Equations solver categories