If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + -42x + 56 = 0 Reorder the terms: 56 + -42x + x2 = 0 Solving 56 + -42x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-56' to each side of the equation. 56 + -42x + -56 + x2 = 0 + -56 Reorder the terms: 56 + -56 + -42x + x2 = 0 + -56 Combine like terms: 56 + -56 = 0 0 + -42x + x2 = 0 + -56 -42x + x2 = 0 + -56 Combine like terms: 0 + -56 = -56 -42x + x2 = -56 The x term is -42x. Take half its coefficient (-21). Square it (441) and add it to both sides. Add '441' to each side of the equation. -42x + 441 + x2 = -56 + 441 Reorder the terms: 441 + -42x + x2 = -56 + 441 Combine like terms: -56 + 441 = 385 441 + -42x + x2 = 385 Factor a perfect square on the left side: (x + -21)(x + -21) = 385 Calculate the square root of the right side: 19.62141687 Break this problem into two subproblems by setting (x + -21) equal to 19.62141687 and -19.62141687.Subproblem 1
x + -21 = 19.62141687 Simplifying x + -21 = 19.62141687 Reorder the terms: -21 + x = 19.62141687 Solving -21 + x = 19.62141687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + x = 19.62141687 + 21 Combine like terms: -21 + 21 = 0 0 + x = 19.62141687 + 21 x = 19.62141687 + 21 Combine like terms: 19.62141687 + 21 = 40.62141687 x = 40.62141687 Simplifying x = 40.62141687Subproblem 2
x + -21 = -19.62141687 Simplifying x + -21 = -19.62141687 Reorder the terms: -21 + x = -19.62141687 Solving -21 + x = -19.62141687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + x = -19.62141687 + 21 Combine like terms: -21 + 21 = 0 0 + x = -19.62141687 + 21 x = -19.62141687 + 21 Combine like terms: -19.62141687 + 21 = 1.37858313 x = 1.37858313 Simplifying x = 1.37858313Solution
The solution to the problem is based on the solutions from the subproblems. x = {40.62141687, 1.37858313}
| 3x(2x-6)= | | y+8y=9 | | 0.2(3.1x-0.4)=2.15-0.25x | | x-42X+56=0 | | 21c=7 | | 5p+yr=r-8h | | 7x+2=2-(3x-7) | | y-5=-6(x+5) | | 5+3x-4y=0 | | 30(x-1)=-5(6-x) | | x+7(2-.4x)+3z=29 | | -[6x-(9x+4)]=4+(2x+5) | | 432-26x=39-3x | | 4(1+5n)=2n-14 | | 6x+12=6x+6 | | 9(4-y)-7y=5(3y-2) | | (5x+7)(3x-2)= | | 7x-y=-8forX | | 410=560*x | | (Sinx)+2(cosx)=0 | | 6[8-(-2x-7)]=36x+174 | | 4x^2+12x+24=0 | | 4x^3-9x^2+4x-9=0 | | Sin^2x+sin^1x-1=0 | | 21x-7-14x+3=21x-8-14x+15 | | 8x^2+12x+24=0 | | -[4x-(2x+2)]=-3-[3(2x-4)-2x] | | 13+2f=5 | | 10+2z=16 | | 11=8+3s | | 9t^2-25t=0 | | 15=3h+6 |