If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x(x + 7) = 4 Reorder the terms: x(7 + x) = 4 (7 * x + x * x) = 4 (7x + x2) = 4 Solving 7x + x2 = 4 Solving for variable 'x'. Reorder the terms: -4 + 7x + x2 = 4 + -4 Combine like terms: 4 + -4 = 0 -4 + 7x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '4' to each side of the equation. -4 + 7x + 4 + x2 = 0 + 4 Reorder the terms: -4 + 4 + 7x + x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 7x + x2 = 0 + 4 7x + x2 = 0 + 4 Combine like terms: 0 + 4 = 4 7x + x2 = 4 The x term is 7x. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7x + 12.25 + x2 = 4 + 12.25 Reorder the terms: 12.25 + 7x + x2 = 4 + 12.25 Combine like terms: 4 + 12.25 = 16.25 12.25 + 7x + x2 = 16.25 Factor a perfect square on the left side: (x + 3.5)(x + 3.5) = 16.25 Calculate the square root of the right side: 4.031128874 Break this problem into two subproblems by setting (x + 3.5) equal to 4.031128874 and -4.031128874.Subproblem 1
x + 3.5 = 4.031128874 Simplifying x + 3.5 = 4.031128874 Reorder the terms: 3.5 + x = 4.031128874 Solving 3.5 + x = 4.031128874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 4.031128874 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 4.031128874 + -3.5 x = 4.031128874 + -3.5 Combine like terms: 4.031128874 + -3.5 = 0.531128874 x = 0.531128874 Simplifying x = 0.531128874Subproblem 2
x + 3.5 = -4.031128874 Simplifying x + 3.5 = -4.031128874 Reorder the terms: 3.5 + x = -4.031128874 Solving 3.5 + x = -4.031128874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -4.031128874 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -4.031128874 + -3.5 x = -4.031128874 + -3.5 Combine like terms: -4.031128874 + -3.5 = -7.531128874 x = -7.531128874 Simplifying x = -7.531128874Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.531128874, -7.531128874}
| 5x^2-8x=21 | | 6(3x-1)-10x=7 | | 5.3=8.9-9.4x | | 15x^2+16=34x | | [x-10]-4=2 | | 5x-3=-8x+23 | | 7x-66=3x+6 | | 2x+28=.44*x | | 11(z+1)-3(z-2)=3(z-1)+4(z-2) | | ln(2x+1)+ln(x+2)=2ln(x+2) | | 6x^2-5+7=0 | | 3s+4t-16=5s-8t-23 | | 6x+5(3+2x)=1 | | 9x-5=-9x-131 | | 142-118=x | | 10x^2-32w-32=0 | | 9x-5=9x-131 | | -1/4k=-2,5 | | 8x=73 | | 2x-3=9x-131 | | 1/8=6 | | 4(5-3x)-9=23 | | 30=1.12 | | 8x-5=2x-10 | | 6x-4=42x+36 | | 24x^2+200x+400=0 | | 9m-28=12 | | 4x^3-x+1=0 | | 6x+4-4(4-4x+2x^2)x=2x^3+4x^2+2x+4 | | 2x-3=-9x-131 | | 2x-4+6x=-20 | | f(x)=10x^2-1 |