If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -2x2 + x + 5 = 0 Reorder the terms: 5 + x + -2x2 = 0 Solving 5 + x + -2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -2.5 + -0.5x + x2 = 0 Move the constant term to the right: Add '2.5' to each side of the equation. -2.5 + -0.5x + 2.5 + x2 = 0 + 2.5 Reorder the terms: -2.5 + 2.5 + -0.5x + x2 = 0 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + -0.5x + x2 = 0 + 2.5 -0.5x + x2 = 0 + 2.5 Combine like terms: 0 + 2.5 = 2.5 -0.5x + x2 = 2.5 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -0.5x + 0.25 + x2 = 2.5 + 0.25 Reorder the terms: 0.25 + -0.5x + x2 = 2.5 + 0.25 Combine like terms: 2.5 + 0.25 = 2.75 0.25 + -0.5x + x2 = 2.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 2.75 Calculate the square root of the right side: 1.658312395 Break this problem into two subproblems by setting (x + 0.5) equal to 1.658312395 and -1.658312395.Subproblem 1
x + 0.5 = 1.658312395 Simplifying x + 0.5 = 1.658312395 Reorder the terms: 0.5 + x = 1.658312395 Solving 0.5 + x = 1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.658312395 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.658312395 + -0.5 x = 1.658312395 + -0.5 Combine like terms: 1.658312395 + -0.5 = 1.158312395 x = 1.158312395 Simplifying x = 1.158312395Subproblem 2
x + 0.5 = -1.658312395 Simplifying x + 0.5 = -1.658312395 Reorder the terms: 0.5 + x = -1.658312395 Solving 0.5 + x = -1.658312395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.658312395 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.658312395 + -0.5 x = -1.658312395 + -0.5 Combine like terms: -1.658312395 + -0.5 = -2.158312395 x = -2.158312395 Simplifying x = -2.158312395Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.158312395, -2.158312395}
| -x^2-7x+3=0 | | 2z-xy=x+7 | | 18(x-72)=36 | | 13-x=15 | | -3a-4/5=7-2a/2 | | 3(g-7)-2g=20 | | -6u-14=-8u | | -16=2(w+6)-6w | | 4(2p+20)=180 | | 5(3+c)=4(c-6) | | -x-2-2x=-2-2 | | p=12.4-Q | | 5y-6x=r^2 | | 13.7x-6.5=-2.3x+8.3 | | 2(m+4)=3(m-2) | | 4=3(p+2)-2 | | 2y^2+3y-29=(y+1)2 | | X^3+x^2+2x-2=0 | | 14u+18=2(7u+9) | | -4u-6=2 | | 2(8c-1)-18=14c+2 | | 3+-8+4x=90 | | a^2-5a-2=0 | | 3-4n+1=-11 | | -25=-3(4z+6) | | 20(b-15)b=19 | | 7(y-3)=5y-33 | | 0=150+0.22d | | -3w^2=-213 | | 4x+3-8=90 | | 50=2(5+n) | | -2.1(z-1.5)=0.4(z-3) |