If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + 20x + -9 = 0 Reorder the terms: -9 + 20x + x2 = 0 Solving -9 + 20x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '9' to each side of the equation. -9 + 20x + 9 + x2 = 0 + 9 Reorder the terms: -9 + 9 + 20x + x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 20x + x2 = 0 + 9 20x + x2 = 0 + 9 Combine like terms: 0 + 9 = 9 20x + x2 = 9 The x term is 20x. Take half its coefficient (10). Square it (100) and add it to both sides. Add '100' to each side of the equation. 20x + 100 + x2 = 9 + 100 Reorder the terms: 100 + 20x + x2 = 9 + 100 Combine like terms: 9 + 100 = 109 100 + 20x + x2 = 109 Factor a perfect square on the left side: (x + 10)(x + 10) = 109 Calculate the square root of the right side: 10.440306509 Break this problem into two subproblems by setting (x + 10) equal to 10.440306509 and -10.440306509.Subproblem 1
x + 10 = 10.440306509 Simplifying x + 10 = 10.440306509 Reorder the terms: 10 + x = 10.440306509 Solving 10 + x = 10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 10.440306509 + -10 Combine like terms: 10 + -10 = 0 0 + x = 10.440306509 + -10 x = 10.440306509 + -10 Combine like terms: 10.440306509 + -10 = 0.440306509 x = 0.440306509 Simplifying x = 0.440306509Subproblem 2
x + 10 = -10.440306509 Simplifying x + 10 = -10.440306509 Reorder the terms: 10 + x = -10.440306509 Solving 10 + x = -10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -10.440306509 + -10 Combine like terms: 10 + -10 = 0 0 + x = -10.440306509 + -10 x = -10.440306509 + -10 Combine like terms: -10.440306509 + -10 = -20.440306509 x = -20.440306509 Simplifying x = -20.440306509Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.440306509, -20.440306509}
| X^4+9x^2-49=0 | | 20/100=x/64 | | 2*151+6-151=157 | | 3x-15=6-4x | | 4x+20+6x+10=180 | | 2x+6-x=157 | | 2(x-10)=32 | | 3n=-3(-8-7) | | x+.56=18 | | 5w-6=34+26w | | X=-7y+12 | | 3(24-6x)=-36 | | 4x^2-4xy+2y^2-30=0 | | 3x-10+6x+100=180 | | 2d+6=-21-7d | | y^3-3y=9 | | 2(x-7)=10x+8 | | 17=12x | | 1x+9=5(4x-2) | | x^2-4x-133.25=0 | | 16x^2-48x-13=0 | | 2x+10x-3=x+15x-9 | | 4y^2+y-5=0 | | 3(2t-5)+2t=30-y | | 18-2n=4n-6 | | -5-2m=-5-5m+2m | | 6(6)+9y=54 | | v-7=4 | | -k-6k=-7-8k | | 30x-6=84 | | 2(4q+6)=4(3+2q) | | Ln(x-6)=4 |