If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7x2 + 7x = 9 Reorder the terms: 7x + 7x2 = 9 Solving 7x + 7x2 = 9 Solving for variable 'x'. Reorder the terms: -9 + 7x + 7x2 = 9 + -9 Combine like terms: 9 + -9 = 0 -9 + 7x + 7x2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -1.285714286 + x + x2 = 0 Move the constant term to the right: Add '1.285714286' to each side of the equation. -1.285714286 + x + 1.285714286 + x2 = 0 + 1.285714286 Reorder the terms: -1.285714286 + 1.285714286 + x + x2 = 0 + 1.285714286 Combine like terms: -1.285714286 + 1.285714286 = 0.000000000 0.000000000 + x + x2 = 0 + 1.285714286 x + x2 = 0 + 1.285714286 Combine like terms: 0 + 1.285714286 = 1.285714286 x + x2 = 1.285714286 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. + 0.25 + x2 = 1.285714286 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = 1.285714286 + 0.25 Combine like terms: 1.285714286 + 0.25 = 1.535714286 1.25 + x2 = 1.535714286 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 1.535714286 Calculate the square root of the right side: 1.239239398 Break this problem into two subproblems by setting (x + 0.5) equal to 1.239239398 and -1.239239398.Subproblem 1
x + 0.5 = 1.239239398 Simplifying x + 0.5 = 1.239239398 Reorder the terms: 0.5 + x = 1.239239398 Solving 0.5 + x = 1.239239398 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 = 1.239239398 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.239239398 + -0.5 x = 1.239239398 + -0.5 Combine like terms: 1.239239398 + -0.5 = 0.739239398 x = 0.739239398 Simplifying x = 0.739239398Subproblem 2
x + 0.5 = -1.239239398 Simplifying x + 0.5 = -1.239239398 Reorder the terms: 0.5 + x = -1.239239398 Solving 0.5 + x = -1.239239398 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 = -1.239239398 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.239239398 + -0.5 x = -1.239239398 + -0.5 Combine like terms: -1.239239398 + -0.5 = -1.739239398 x = -1.739239398 Simplifying x = -1.739239398Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.739239398, -1.739239398}
| cos7x=cosx/3 | | 11-4+(-1)*5= | | 9t+18-3t-15= | | y=2x^4-4x^2+15 | | 2(2x-1)-3(x+3)=x+1 | | 7y+8y-3x-4x= | | 2x-25+7x-75=7x-20 | | 7x-x^3=6 | | 9x+3y-6x+2y= | | 4w+10=-3(w-8) | | 25x+7x-4x-6x= | | Sinx=-.72 | | 2(d+6)=-2d-12 | | X+40+y=180 | | 2x+33=7x+3 | | 0.84xa=1 | | X^2-(1+3i)x-2+2i=0 | | 5+3(2a-5)-(a-6)= | | 5X+20y=345 | | 16x^2-96x+25y^2=256 | | 3x+20y=345 | | x+.07x=7.49 | | 4y-18=18 | | 15a-9a=72 | | n^3-m^3x^3/n-mx | | .025x=46 | | .025x=100 | | x=0.9x+3 | | 5(7-2x)=65 | | 2(x-3)=8+3x | | 11x+25=7x+1 | | 9x+7=4x-4 |