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 + 90 = 0 Reorder the terms: 90 + -20x + x2 = 0 Solving 90 + -20x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-90' to each side of the equation. 90 + -20x + -90 + x2 = 0 + -90 Reorder the terms: 90 + -90 + -20x + x2 = 0 + -90 Combine like terms: 90 + -90 = 0 0 + -20x + x2 = 0 + -90 -20x + x2 = 0 + -90 Combine like terms: 0 + -90 = -90 -20x + x2 = -90 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 = -90 + 100 Reorder the terms: 100 + -20x + x2 = -90 + 100 Combine like terms: -90 + 100 = 10 100 + -20x + x2 = 10 Factor a perfect square on the left side: (x + -10)(x + -10) = 10 Calculate the square root of the right side: 3.16227766 Break this problem into two subproblems by setting (x + -10) equal to 3.16227766 and -3.16227766.Subproblem 1
x + -10 = 3.16227766 Simplifying x + -10 = 3.16227766 Reorder the terms: -10 + x = 3.16227766 Solving -10 + x = 3.16227766 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 = 3.16227766 + 10 Combine like terms: -10 + 10 = 0 0 + x = 3.16227766 + 10 x = 3.16227766 + 10 Combine like terms: 3.16227766 + 10 = 13.16227766 x = 13.16227766 Simplifying x = 13.16227766Subproblem 2
x + -10 = -3.16227766 Simplifying x + -10 = -3.16227766 Reorder the terms: -10 + x = -3.16227766 Solving -10 + x = -3.16227766 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 = -3.16227766 + 10 Combine like terms: -10 + 10 = 0 0 + x = -3.16227766 + 10 x = -3.16227766 + 10 Combine like terms: -3.16227766 + 10 = 6.83772234 x = 6.83772234 Simplifying x = 6.83772234Solution
The solution to the problem is based on the solutions from the subproblems. x = {13.16227766, 6.83772234}
| X=3x+1.5x+180-455 | | 64x^2-196y^6=0 | | x-17x=517.92 | | 84/30= | | 36x^2+24x+36=0 | | 6(x+12)-21x+3= | | 2z-1=15 | | (6s+5t)+(4t+8s)= | | 6(9n-7)=10n-(1-3n) | | 2(3x+2)+3(2+2x)=70 | | 7x+28=84 | | q=2k+2w | | -7z-2z=8z+7+z | | 22-x=3(c+6) | | -6x-2x+20=10 | | w/7-2=9 | | 5x^2-15=5x^2+2x | | 3x(-2/5)= | | (x^3-x+1)-(3x-1)= | | 5+4(a-2)=2(a-7)+1 | | 21-8k=-7(2k+3) | | -6x-18=-114 | | 2(-1-2x)+7x=6-5x | | 4x-1=2x-2 | | 66=24x+6y | | 10x+x+-6x=226 | | 5p+5-7=80 | | -9z-3z=-2z-3-4z | | 4c-2/5=6 | | 4(y+9)=3Y-14 | | (x^4)-(8x^2)-20=0 | | 9x-3x+90=9x+48 |