If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7k2 + -5k + -21 = 0 Reorder the terms: -21 + -5k + 7k2 = 0 Solving -21 + -5k + 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'. -3 + -0.7142857143k + k2 = 0 Move the constant term to the right: Add '3' to each side of the equation. -3 + -0.7142857143k + 3 + k2 = 0 + 3 Reorder the terms: -3 + 3 + -0.7142857143k + k2 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -0.7142857143k + k2 = 0 + 3 -0.7142857143k + k2 = 0 + 3 Combine like terms: 0 + 3 = 3 -0.7142857143k + k2 = 3 The k term is -0.7142857143k. Take half its coefficient (-0.3571428572). Square it (0.1275510204) and add it to both sides. Add '0.1275510204' to each side of the equation. -0.7142857143k + 0.1275510204 + k2 = 3 + 0.1275510204 Reorder the terms: 0.1275510204 + -0.7142857143k + k2 = 3 + 0.1275510204 Combine like terms: 3 + 0.1275510204 = 3.1275510204 0.1275510204 + -0.7142857143k + k2 = 3.1275510204 Factor a perfect square on the left side: (k + -0.3571428572)(k + -0.3571428572) = 3.1275510204 Calculate the square root of the right side: 1.768488343 Break this problem into two subproblems by setting (k + -0.3571428572) equal to 1.768488343 and -1.768488343.Subproblem 1
k + -0.3571428572 = 1.768488343 Simplifying k + -0.3571428572 = 1.768488343 Reorder the terms: -0.3571428572 + k = 1.768488343 Solving -0.3571428572 + k = 1.768488343 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.3571428572' to each side of the equation. -0.3571428572 + 0.3571428572 + k = 1.768488343 + 0.3571428572 Combine like terms: -0.3571428572 + 0.3571428572 = 0.0000000000 0.0000000000 + k = 1.768488343 + 0.3571428572 k = 1.768488343 + 0.3571428572 Combine like terms: 1.768488343 + 0.3571428572 = 2.1256312002 k = 2.1256312002 Simplifying k = 2.1256312002Subproblem 2
k + -0.3571428572 = -1.768488343 Simplifying k + -0.3571428572 = -1.768488343 Reorder the terms: -0.3571428572 + k = -1.768488343 Solving -0.3571428572 + k = -1.768488343 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '0.3571428572' to each side of the equation. -0.3571428572 + 0.3571428572 + k = -1.768488343 + 0.3571428572 Combine like terms: -0.3571428572 + 0.3571428572 = 0.0000000000 0.0000000000 + k = -1.768488343 + 0.3571428572 k = -1.768488343 + 0.3571428572 Combine like terms: -1.768488343 + 0.3571428572 = -1.4113454858 k = -1.4113454858 Simplifying k = -1.4113454858Solution
The solution to the problem is based on the solutions from the subproblems. k = {2.1256312002, -1.4113454858}
| (6m)(8m)= | | 4x+28-9x=100 | | 2=62-5x | | 3/4-5=10 | | 80-4x=24 | | sqrt(3x-2)-sqrt(x+1)=0 | | 0.6*x=0.2 | | 23+x=-14 | | 15-n= | | 2sin^2(6x)=1 | | 8+4x=132 | | 2x(x+10)=-7y | | 15/x=2/4 | | X^2-4x=12x | | 5.5x=3.2(2x+1) | | T-5.4=14.2 | | 1x+1x=9x+9x | | 5(x+8)=35 | | 82=3x-29 | | 1n+1x=1a-1v | | x+y=3302x+3y=140 | | -4n^2-3n+6=0 | | 7!/3! | | 9a+102= | | 2x^2+10x-5(.5x^2)= | | 5c+9=4c | | 2a-28=12a | | 3x^2-0.5x-56.5=0 | | -6+7j=9j | | 11u-2u=81 | | 3x^2-0.5x=56.5 | | 1240=2/3x-300 |