If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + 8x + -42 = 0 Reorder the terms: -42 + 8x + x2 = 0 Solving -42 + 8x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '42' to each side of the equation. -42 + 8x + 42 + x2 = 0 + 42 Reorder the terms: -42 + 42 + 8x + x2 = 0 + 42 Combine like terms: -42 + 42 = 0 0 + 8x + x2 = 0 + 42 8x + x2 = 0 + 42 Combine like terms: 0 + 42 = 42 8x + x2 = 42 The x term is 8x. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x + 16 + x2 = 42 + 16 Reorder the terms: 16 + 8x + x2 = 42 + 16 Combine like terms: 42 + 16 = 58 16 + 8x + x2 = 58 Factor a perfect square on the left side: (x + 4)(x + 4) = 58 Calculate the square root of the right side: 7.615773106 Break this problem into two subproblems by setting (x + 4) equal to 7.615773106 and -7.615773106.Subproblem 1
x + 4 = 7.615773106 Simplifying x + 4 = 7.615773106 Reorder the terms: 4 + x = 7.615773106 Solving 4 + x = 7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 7.615773106 + -4 Combine like terms: 4 + -4 = 0 0 + x = 7.615773106 + -4 x = 7.615773106 + -4 Combine like terms: 7.615773106 + -4 = 3.615773106 x = 3.615773106 Simplifying x = 3.615773106Subproblem 2
x + 4 = -7.615773106 Simplifying x + 4 = -7.615773106 Reorder the terms: 4 + x = -7.615773106 Solving 4 + x = -7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -7.615773106 + -4 Combine like terms: 4 + -4 = 0 0 + x = -7.615773106 + -4 x = -7.615773106 + -4 Combine like terms: -7.615773106 + -4 = -11.615773106 x = -11.615773106 Simplifying x = -11.615773106Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.615773106, -11.615773106}
| 6-8x=36-29x | | 6x+12=123-9x | | 0-6x=5-7x | | 4x-2=13x-74 | | 2x-2x=3-5+8 | | x^2+2x-530=0 | | 2+15y=35y-1 | | -3x^2+15x+42=0 | | 2x^2-22+60=0 | | 2x-2x=3-5+2 | | -5x^2-29x-20=0 | | 3f=20-f | | 2.49+1.24x=11.17 | | 80+4x=100 | | 5(2x-3)=2(3x+7) | | 0.45(d-1.2)+0.67=5.53 | | 0.22n+n=3.55 | | 10=0.66m-1.5m | | a^2+a*b+8*a+8*b= | | .83(12-5b)=35 | | 5ab+10a= | | 2x+1=0 | | 5+3=14 | | X^3-8x^2-16x=0 | | X^3-8x^2+16x=0 | | 148=4x+40 | | X^3-x(8x-16)=0 | | 3(-21+7)=2(-21) | | X^3+18x^2+16x=0 | | x^2+10x+25=49 | | 6(x+2)=48 | | x^2+10x+25=40 |