If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + -1x + -42 = 42 Reorder the terms: -42 + -1x + x2 = 42 Solving -42 + -1x + x2 = 42 Solving for variable 'x'. Reorder the terms: -42 + -42 + -1x + x2 = 42 + -42 Combine like terms: -42 + -42 = -84 -84 + -1x + x2 = 42 + -42 Combine like terms: 42 + -42 = 0 -84 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '84' to each side of the equation. -84 + -1x + 84 + x2 = 0 + 84 Reorder the terms: -84 + 84 + -1x + x2 = 0 + 84 Combine like terms: -84 + 84 = 0 0 + -1x + x2 = 0 + 84 -1x + x2 = 0 + 84 Combine like terms: 0 + 84 = 84 -1x + x2 = 84 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 84 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 84 + 0.25 Combine like terms: 84 + 0.25 = 84.25 0.25 + -1x + x2 = 84.25 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 84.25 Calculate the square root of the right side: 9.178779875 Break this problem into two subproblems by setting (x + -0.5) equal to 9.178779875 and -9.178779875.Subproblem 1
x + -0.5 = 9.178779875 Simplifying x + -0.5 = 9.178779875 Reorder the terms: -0.5 + x = 9.178779875 Solving -0.5 + x = 9.178779875 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 9.178779875 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 9.178779875 + 0.5 x = 9.178779875 + 0.5 Combine like terms: 9.178779875 + 0.5 = 9.678779875 x = 9.678779875 Simplifying x = 9.678779875Subproblem 2
x + -0.5 = -9.178779875 Simplifying x + -0.5 = -9.178779875 Reorder the terms: -0.5 + x = -9.178779875 Solving -0.5 + x = -9.178779875 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -9.178779875 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -9.178779875 + 0.5 x = -9.178779875 + 0.5 Combine like terms: -9.178779875 + 0.5 = -8.678779875 x = -8.678779875 Simplifying x = -8.678779875Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.678779875, -8.678779875}
| 8r(r+2)(3r-1)=0 | | 3.14(x^2-20x+100)=0 | | 8x-14=-4x+2 | | 20=3x^2-7x | | 1/4y+1=7/8 | | s=80t-16t^2 | | Y=2*-2+10 | | 3.9x+96=6.4x+46 | | x=3x^2-7x-20 | | f(x)=7x^2+6x+9 | | 3z-14=4 | | 8p^2-55p=7 | | -2x+10+4x=70 | | 3n-2=27 | | 9b^2=4 | | -5x-8(1)=17 | | v-1.3=0.66 | | 6(t-1)=9-(t-4) | | 2x^2-30=10 | | y-3x=-1 | | 13+1t=25 | | 2x+7x+6=0 | | 13+1t=13 | | 7u=7/8 | | 2x-3/4+x=2x+3/2+5 | | 2(1.5d-2)+(.7d+1)=2(4-1.3d)+(2.5+d) | | 2x-3/4-2x+3/2 | | x/-4-5=14 | | -32.02=3.7-7.6a | | X+24.4=3.7 | | 3+6lnx=21 | | f(x)=7x^2+9x+6 |