If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 720 = 0.8x2 + x Reorder the terms: 720 = x + 0.8x2 Solving 720 = x + 0.8x2 Solving for variable 'x'. Reorder the terms: 720 + -1x + -0.8x2 = x + -1x + 0.8x2 + -0.8x2 Combine like terms: x + -1x = 0 720 + -1x + -0.8x2 = 0 + 0.8x2 + -0.8x2 720 + -1x + -0.8x2 = 0.8x2 + -0.8x2 Combine like terms: 0.8x2 + -0.8x2 = 0.0 720 + -1x + -0.8x2 = 0.0 Begin completing the square. Divide all terms by -0.8 the coefficient of the squared term: Divide each side by '-0.8'. -900 + 1.25x + x2 = 0 Move the constant term to the right: Add '900' to each side of the equation. -900 + 1.25x + 900 + x2 = 0 + 900 Reorder the terms: -900 + 900 + 1.25x + x2 = 0 + 900 Combine like terms: -900 + 900 = 0 0 + 1.25x + x2 = 0 + 900 1.25x + x2 = 0 + 900 Combine like terms: 0 + 900 = 900 1.25x + x2 = 900 The x term is 1.25x. Take half its coefficient (0.625). Square it (0.390625) and add it to both sides. Add '0.390625' to each side of the equation. 1.25x + 0.390625 + x2 = 900 + 0.390625 Reorder the terms: 0.390625 + 1.25x + x2 = 900 + 0.390625 Combine like terms: 900 + 0.390625 = 900.390625 0.390625 + 1.25x + x2 = 900.390625 Factor a perfect square on the left side: (x + 0.625)(x + 0.625) = 900.390625 Calculate the square root of the right side: 30.00650971 Break this problem into two subproblems by setting (x + 0.625) equal to 30.00650971 and -30.00650971.Subproblem 1
x + 0.625 = 30.00650971 Simplifying x + 0.625 = 30.00650971 Reorder the terms: 0.625 + x = 30.00650971 Solving 0.625 + x = 30.00650971 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = 30.00650971 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = 30.00650971 + -0.625 x = 30.00650971 + -0.625 Combine like terms: 30.00650971 + -0.625 = 29.38150971 x = 29.38150971 Simplifying x = 29.38150971Subproblem 2
x + 0.625 = -30.00650971 Simplifying x + 0.625 = -30.00650971 Reorder the terms: 0.625 + x = -30.00650971 Solving 0.625 + x = -30.00650971 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = -30.00650971 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = -30.00650971 + -0.625 x = -30.00650971 + -0.625 Combine like terms: -30.00650971 + -0.625 = -30.63150971 x = -30.63150971 Simplifying x = -30.63150971Solution
The solution to the problem is based on the solutions from the subproblems. x = {29.38150971, -30.63150971}
| -4p^2-12p+16=0 | | -4p^2-12+16=0 | | (x-3)*6=x-123 | | 2(3x-1)*3-5(3x-1)*2= | | 1.96/x=900 | | 6b^2-54=0 | | 1.96^2/x^2=900 | | 2x^2+27x=7 | | 4x(2x-1)=0 | | 3x-(2x+4)=6 | | y^4+4y^3-8y^2+16y-48=0 | | 2x/10=-4 | | 5(3c-2)-7c=400-2c | | (a-5)(2a+7)=0 | | x=123 | | (1+3w+w^2)(1+w+2w^2)=2 | | cosx=0.75 | | (5-2d)(5+2d)= | | (5n-3)(2n+1)= | | (5a+6)(a-4)= | | (u-5)(u-6)= | | (4-2u)(3+u)= | | 5x+5=35-3x | | (5x+3y)(3x-y)= | | -4-2x=-8+12x | | (u-2v)(u+3v)= | | (2r-4)(2r+4)= | | 30-6x=10x-8x | | 3x^2+16xy+21y^2=0 | | 12a-7(2+a)=2(4a-3) | | (1+3r)(2-r)= | | 25x^2-104x-96=0 |