If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 9 = x2 + 8x + 7 Reorder the terms: 9 = 7 + 8x + x2 Solving 9 = 7 + 8x + x2 Solving for variable 'x'. Combine like terms: 9 + -7 = 2 2 + -8x + -1x2 = 7 + 8x + x2 + -7 + -8x + -1x2 Reorder the terms: 2 + -8x + -1x2 = 7 + -7 + 8x + -8x + x2 + -1x2 Combine like terms: 7 + -7 = 0 2 + -8x + -1x2 = 0 + 8x + -8x + x2 + -1x2 2 + -8x + -1x2 = 8x + -8x + x2 + -1x2 Combine like terms: 8x + -8x = 0 2 + -8x + -1x2 = 0 + x2 + -1x2 2 + -8x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 2 + -8x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -2 + 8x + x2 = 0 Move the constant term to the right: Add '2' to each side of the equation. -2 + 8x + 2 + x2 = 0 + 2 Reorder the terms: -2 + 2 + 8x + x2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 8x + x2 = 0 + 2 8x + x2 = 0 + 2 Combine like terms: 0 + 2 = 2 8x + x2 = 2 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 = 2 + 16 Reorder the terms: 16 + 8x + x2 = 2 + 16 Combine like terms: 2 + 16 = 18 16 + 8x + x2 = 18 Factor a perfect square on the left side: (x + 4)(x + 4) = 18 Calculate the square root of the right side: 4.242640687 Break this problem into two subproblems by setting (x + 4) equal to 4.242640687 and -4.242640687.Subproblem 1
x + 4 = 4.242640687 Simplifying x + 4 = 4.242640687 Reorder the terms: 4 + x = 4.242640687 Solving 4 + x = 4.242640687 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 = 4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.242640687 + -4 x = 4.242640687 + -4 Combine like terms: 4.242640687 + -4 = 0.242640687 x = 0.242640687 Simplifying x = 0.242640687Subproblem 2
x + 4 = -4.242640687 Simplifying x + 4 = -4.242640687 Reorder the terms: 4 + x = -4.242640687 Solving 4 + x = -4.242640687 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 = -4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.242640687 + -4 x = -4.242640687 + -4 Combine like terms: -4.242640687 + -4 = -8.242640687 x = -8.242640687 Simplifying x = -8.242640687Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.242640687, -8.242640687}
| 2x+23=9x-40 | | 75-7x=20x+15 | | 5x+2(x+6)= | | -22-1x=5+6x+9 | | 37-5x=4x+21 | | 97-5x=2x+6 | | 10-7x=88-21x | | 7.25v=42.05 | | 109-3x=4x+18 | | -13-3x=11-7x | | 18-5y=1y+4 | | x^2-567.5x+460=0 | | 7a+b= | | 8x(4x-7)=0 | | x^2-567x+460=0 | | 102-5x=3x+6 | | x-26x+61=5x-19 | | 2-5x+6=0 | | .88v=-5.016 | | 7x^2+30x+8=0 | | 9x-4(x-1)=8x+15-2x | | .6x-1.5=1.8 | | G-5.6=12.2 | | x-11x+72=4x+18 | | M+20.4=20.1 | | 7x-27=50 | | 4x+6=60-2x | | (n-5)*6=60 | | x^2=-900 | | 2w-3-4w=9 | | M+.63=5 | | 18+4k=-10-4k |