If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -9x2 + 8x + 7 = 0 Reorder the terms: 7 + 8x + -9x2 = 0 Solving 7 + 8x + -9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -9 the coefficient of the squared term: Divide each side by '-9'. -0.7777777778 + -0.8888888889x + x2 = 0 Move the constant term to the right: Add '0.7777777778' to each side of the equation. -0.7777777778 + -0.8888888889x + 0.7777777778 + x2 = 0 + 0.7777777778 Reorder the terms: -0.7777777778 + 0.7777777778 + -0.8888888889x + x2 = 0 + 0.7777777778 Combine like terms: -0.7777777778 + 0.7777777778 = 0.0000000000 0.0000000000 + -0.8888888889x + x2 = 0 + 0.7777777778 -0.8888888889x + x2 = 0 + 0.7777777778 Combine like terms: 0 + 0.7777777778 = 0.7777777778 -0.8888888889x + x2 = 0.7777777778 The x term is -0.8888888889x. Take half its coefficient (-0.4444444445). Square it (0.1975308642) and add it to both sides. Add '0.1975308642' to each side of the equation. -0.8888888889x + 0.1975308642 + x2 = 0.7777777778 + 0.1975308642 Reorder the terms: 0.1975308642 + -0.8888888889x + x2 = 0.7777777778 + 0.1975308642 Combine like terms: 0.7777777778 + 0.1975308642 = 0.975308642 0.1975308642 + -0.8888888889x + x2 = 0.975308642 Factor a perfect square on the left side: (x + -0.4444444445)(x + -0.4444444445) = 0.975308642 Calculate the square root of the right side: 0.987577157 Break this problem into two subproblems by setting (x + -0.4444444445) equal to 0.987577157 and -0.987577157.Subproblem 1
x + -0.4444444445 = 0.987577157 Simplifying x + -0.4444444445 = 0.987577157 Reorder the terms: -0.4444444445 + x = 0.987577157 Solving -0.4444444445 + x = 0.987577157 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4444444445' to each side of the equation. -0.4444444445 + 0.4444444445 + x = 0.987577157 + 0.4444444445 Combine like terms: -0.4444444445 + 0.4444444445 = 0.0000000000 0.0000000000 + x = 0.987577157 + 0.4444444445 x = 0.987577157 + 0.4444444445 Combine like terms: 0.987577157 + 0.4444444445 = 1.4320216015 x = 1.4320216015 Simplifying x = 1.4320216015Subproblem 2
x + -0.4444444445 = -0.987577157 Simplifying x + -0.4444444445 = -0.987577157 Reorder the terms: -0.4444444445 + x = -0.987577157 Solving -0.4444444445 + x = -0.987577157 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4444444445' to each side of the equation. -0.4444444445 + 0.4444444445 + x = -0.987577157 + 0.4444444445 Combine like terms: -0.4444444445 + 0.4444444445 = 0.0000000000 0.0000000000 + x = -0.987577157 + 0.4444444445 x = -0.987577157 + 0.4444444445 Combine like terms: -0.987577157 + 0.4444444445 = -0.5431327125 x = -0.5431327125 Simplifying x = -0.5431327125Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.4320216015, -0.5431327125}
| 1.7+1.02=5.1 | | 4(y+-5)=5(y+3)+-9 | | 1/2d-3/4=2(3f-6) | | 4m+3=-m | | 2(4x+5)=12 | | 11x/3=45 | | 2y-11=13 | | 3.2+0.3c=0.2c+1.4 | | 1.5x^2+7=103 | | 3x-10=11x/3 | | 6x+7=x+8 | | 4F+5F=1 | | 8-d=3 | | 6-x=x-12 | | 20+2x=45 | | -11x^2+12x+6=0 | | 2.2x=-0.0506 | | -log(x)=9.25 | | 3y+(2y-15)=410 | | y/6.4=2 | | n-19=-6 | | (5-2x)=18 | | 6+7x=-4-2 | | (3x+1)(x+5)(2x-1)= | | F(x)=12x^4-11x^3+9x^2+9x-8 | | 3=z/8.6 | | 21x-3=20 | | 137=11+6m | | 1/4t=2 | | X(1-x)=-6 | | 3+(-x)=14 | | 2400=-300x |