If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -2x2 + 21 = 4x Reorder the terms: 21 + -2x2 = 4x Solving 21 + -2x2 = 4x Solving for variable 'x'. Reorder the terms: 21 + -4x + -2x2 = 4x + -4x Combine like terms: 4x + -4x = 0 21 + -4x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -10.5 + 2x + x2 = 0 Move the constant term to the right: Add '10.5' to each side of the equation. -10.5 + 2x + 10.5 + x2 = 0 + 10.5 Reorder the terms: -10.5 + 10.5 + 2x + x2 = 0 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 0.0 + 2x + x2 = 0 + 10.5 2x + x2 = 0 + 10.5 Combine like terms: 0 + 10.5 = 10.5 2x + x2 = 10.5 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 10.5 + 1 Reorder the terms: 1 + 2x + x2 = 10.5 + 1 Combine like terms: 10.5 + 1 = 11.5 1 + 2x + x2 = 11.5 Factor a perfect square on the left side: (x + 1)(x + 1) = 11.5 Calculate the square root of the right side: 3.391164992 Break this problem into two subproblems by setting (x + 1) equal to 3.391164992 and -3.391164992.Subproblem 1
x + 1 = 3.391164992 Simplifying x + 1 = 3.391164992 Reorder the terms: 1 + x = 3.391164992 Solving 1 + x = 3.391164992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 3.391164992 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.391164992 + -1 x = 3.391164992 + -1 Combine like terms: 3.391164992 + -1 = 2.391164992 x = 2.391164992 Simplifying x = 2.391164992Subproblem 2
x + 1 = -3.391164992 Simplifying x + 1 = -3.391164992 Reorder the terms: 1 + x = -3.391164992 Solving 1 + x = -3.391164992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -3.391164992 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.391164992 + -1 x = -3.391164992 + -1 Combine like terms: -3.391164992 + -1 = -4.391164992 x = -4.391164992 Simplifying x = -4.391164992Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.391164992, -4.391164992}
| 3x+1x+75x+1x+150x= | | 23X-5+110+70+14X=360 | | 3x+6(75-x)=384 | | 473+286+n=943 | | x+.13x=18.80 | | 5(-2+4)-x+2=0 | | -10+14=y | | 2t^2+5-3=0 | | 6-5xa=-9 | | 8x-y=150 | | (V+5)(v+3)=0 | | 4+5r-3r=-6r+4 | | -2c+6=4c+48 | | 0.05x+0.10(65-x)=3.95 | | (3-2xa)2=25 | | 15+10x=12+25x | | -30-y=-6 | | 8x+2x+6= | | 7X-4+87=87 | | 4(x-0.3)=6x+7.1 | | 55=x^2-x/2 | | 10=7-5x | | -6x--2x+14=-6 | | 3f+4f+18=11 | | -2x^2=4x | | (x+1)+(x*x)+[(x*x)+1]= | | 62+2X=62 | | 3b+20=6b-40 | | 2-6a=-3a+7-4a-12 | | 5x-6=4x+12 | | 30x-2y=28 | | (N+7)(8n+3)=0 |