If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 9x2 + 18x + -81 = 4 Reorder the terms: -81 + 18x + 9x2 = 4 Solving -81 + 18x + 9x2 = 4 Solving for variable 'x'. Reorder the terms: -81 + -4 + 18x + 9x2 = 4 + -4 Combine like terms: -81 + -4 = -85 -85 + 18x + 9x2 = 4 + -4 Combine like terms: 4 + -4 = 0 -85 + 18x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -9.444444444 + 2x + x2 = 0 Move the constant term to the right: Add '9.444444444' to each side of the equation. -9.444444444 + 2x + 9.444444444 + x2 = 0 + 9.444444444 Reorder the terms: -9.444444444 + 9.444444444 + 2x + x2 = 0 + 9.444444444 Combine like terms: -9.444444444 + 9.444444444 = 0.000000000 0.000000000 + 2x + x2 = 0 + 9.444444444 2x + x2 = 0 + 9.444444444 Combine like terms: 0 + 9.444444444 = 9.444444444 2x + x2 = 9.444444444 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 = 9.444444444 + 1 Reorder the terms: 1 + 2x + x2 = 9.444444444 + 1 Combine like terms: 9.444444444 + 1 = 10.444444444 1 + 2x + x2 = 10.444444444 Factor a perfect square on the left side: (x + 1)(x + 1) = 10.444444444 Calculate the square root of the right side: 3.231786572 Break this problem into two subproblems by setting (x + 1) equal to 3.231786572 and -3.231786572.Subproblem 1
x + 1 = 3.231786572 Simplifying x + 1 = 3.231786572 Reorder the terms: 1 + x = 3.231786572 Solving 1 + x = 3.231786572 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 = 3.231786572 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.231786572 + -1 x = 3.231786572 + -1 Combine like terms: 3.231786572 + -1 = 2.231786572 x = 2.231786572 Simplifying x = 2.231786572Subproblem 2
x + 1 = -3.231786572 Simplifying x + 1 = -3.231786572 Reorder the terms: 1 + x = -3.231786572 Solving 1 + x = -3.231786572 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 = -3.231786572 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.231786572 + -1 x = -3.231786572 + -1 Combine like terms: -3.231786572 + -1 = -4.231786572 x = -4.231786572 Simplifying x = -4.231786572Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.231786572, -4.231786572}
| 75.00(x+7)=408000 | | 3x+7x=1.16 | | -3k-4(3k-3)=-10-4k | | 6(5x-9)+1=30x | | b^2+16b+28=0 | | ((x^-7/8y^1/4)/(x^-3/8))^-8 | | 35=1.5x(4+3) | | p^2-8p-74=0 | | n+n+1+n+2+n+3=-202 | | n+n+2+n+2+n+3=-202 | | 0.5x+0.20y=3.00 | | 5s=s+s+15 | | 54x^2-6x-4=0 | | 12c=20 | | 8(u+3)=6u+22 | | C/45 | | 4(.2a-.5)+.5a=11 | | (4z^12)(-2x^8)(z^4)= | | 9+q=27 | | 36=2(w+6)-5w | | 3b^2-7=236 | | (16)1/2 | | -5(3y-6)-y=-4(y-2) | | Sqrt(x^2-2x-24)=x-3 | | -5(y-6)-y=-4(y-2) | | 75b^2-3=0 | | 7a^3+41a^2-56a=0 | | 12n^2-56n+64=0 | | (X+3)10=4(2x+10) | | 10x+24(x-3)=200 | | -2(6y-7)-y=-3(y-5) | | -10a^2+16a=0 |