If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 0.4x2 + 4x + 7 = 0 Reorder the terms: 7 + 4x + 0.4x2 = 0 Solving 7 + 4x + 0.4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 0.4 the coefficient of the squared term: Divide each side by '0.4'. 17.5 + 10x + x2 = 0 Move the constant term to the right: Add '-17.5' to each side of the equation. 17.5 + 10x + -17.5 + x2 = 0 + -17.5 Reorder the terms: 17.5 + -17.5 + 10x + x2 = 0 + -17.5 Combine like terms: 17.5 + -17.5 = 0.0 0.0 + 10x + x2 = 0 + -17.5 10x + x2 = 0 + -17.5 Combine like terms: 0 + -17.5 = -17.5 10x + x2 = -17.5 The x term is 10x. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10x + 25 + x2 = -17.5 + 25 Reorder the terms: 25 + 10x + x2 = -17.5 + 25 Combine like terms: -17.5 + 25 = 7.5 25 + 10x + x2 = 7.5 Factor a perfect square on the left side: (x + 5)(x + 5) = 7.5 Calculate the square root of the right side: 2.738612788 Break this problem into two subproblems by setting (x + 5) equal to 2.738612788 and -2.738612788.Subproblem 1
x + 5 = 2.738612788 Simplifying x + 5 = 2.738612788 Reorder the terms: 5 + x = 2.738612788 Solving 5 + x = 2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 2.738612788 + -5 Combine like terms: 5 + -5 = 0 0 + x = 2.738612788 + -5 x = 2.738612788 + -5 Combine like terms: 2.738612788 + -5 = -2.261387212 x = -2.261387212 Simplifying x = -2.261387212Subproblem 2
x + 5 = -2.738612788 Simplifying x + 5 = -2.738612788 Reorder the terms: 5 + x = -2.738612788 Solving 5 + x = -2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -2.738612788 + -5 Combine like terms: 5 + -5 = 0 0 + x = -2.738612788 + -5 x = -2.738612788 + -5 Combine like terms: -2.738612788 + -5 = -7.738612788 x = -7.738612788 Simplifying x = -7.738612788Solution
The solution to the problem is based on the solutions from the subproblems. x = {-2.261387212, -7.738612788}
| x^2-(3x+6)=-7-x | | 0.5(6x-4)=8-(2+4x) | | (x^2d^2-3xd+4)y=x+x^2 | | 6x^2y-14xy^2= | | r/5=15 | | 5x+33=12x-10 | | 36x^3+6x^2-9x= | | 3(x+3)=4x+7 | | 1-4cos^2(x/3) | | y^2/4-3 | | 4*11/2=x | | 18r=360 | | (8-w)(4w-9)=0 | | 5(x-8)=6-2(4x+1) | | 0.5(4x+2)=3 | | 2x-6=-2x-6 | | 4x+3y=0by-2 | | 3(x-5)-12=2(x-6)-12 | | 7t-9=4t-3 | | 5(x-9)=x-73 | | -18m^2+32=0 | | 4/10y-28=0 | | (v+7)(v-6)=0 | | X/.2=7 | | 306=-17n | | 6=1.5x | | 1/2=3x?=3/6 | | 4x-4=x-25 | | 1/2=3x?=3/7 | | 3m-2n= | | 3x+7(6x-8)=169 | | 42+4x= |