If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 0 = -9X2 + 7X + 4 Reorder the terms: 0 = 4 + 7X + -9X2 Solving 0 = 4 + 7X + -9X2 Solving for variable 'X'. Combine like terms: 0 + -4 = -4 -4 + -7X + 9X2 = 4 + 7X + -9X2 + -4 + -7X + 9X2 Reorder the terms: -4 + -7X + 9X2 = 4 + -4 + 7X + -7X + -9X2 + 9X2 Combine like terms: 4 + -4 = 0 -4 + -7X + 9X2 = 0 + 7X + -7X + -9X2 + 9X2 -4 + -7X + 9X2 = 7X + -7X + -9X2 + 9X2 Combine like terms: 7X + -7X = 0 -4 + -7X + 9X2 = 0 + -9X2 + 9X2 -4 + -7X + 9X2 = -9X2 + 9X2 Combine like terms: -9X2 + 9X2 = 0 -4 + -7X + 9X2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -0.4444444444 + -0.7777777778X + X2 = 0 Move the constant term to the right: Add '0.4444444444' to each side of the equation. -0.4444444444 + -0.7777777778X + 0.4444444444 + X2 = 0 + 0.4444444444 Reorder the terms: -0.4444444444 + 0.4444444444 + -0.7777777778X + X2 = 0 + 0.4444444444 Combine like terms: -0.4444444444 + 0.4444444444 = 0.0000000000 0.0000000000 + -0.7777777778X + X2 = 0 + 0.4444444444 -0.7777777778X + X2 = 0 + 0.4444444444 Combine like terms: 0 + 0.4444444444 = 0.4444444444 -0.7777777778X + X2 = 0.4444444444 The X term is -0.7777777778X. Take half its coefficient (-0.3888888889). Square it (0.1512345679) and add it to both sides. Add '0.1512345679' to each side of the equation. -0.7777777778X + 0.1512345679 + X2 = 0.4444444444 + 0.1512345679 Reorder the terms: 0.1512345679 + -0.7777777778X + X2 = 0.4444444444 + 0.1512345679 Combine like terms: 0.4444444444 + 0.1512345679 = 0.5956790123 0.1512345679 + -0.7777777778X + X2 = 0.5956790123 Factor a perfect square on the left side: (X + -0.3888888889)(X + -0.3888888889) = 0.5956790123 Calculate the square root of the right side: 0.771802444 Break this problem into two subproblems by setting (X + -0.3888888889) equal to 0.771802444 and -0.771802444.Subproblem 1
X + -0.3888888889 = 0.771802444 Simplifying X + -0.3888888889 = 0.771802444 Reorder the terms: -0.3888888889 + X = 0.771802444 Solving -0.3888888889 + X = 0.771802444 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '0.3888888889' to each side of the equation. -0.3888888889 + 0.3888888889 + X = 0.771802444 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.0000000000 + X = 0.771802444 + 0.3888888889 X = 0.771802444 + 0.3888888889 Combine like terms: 0.771802444 + 0.3888888889 = 1.1606913329 X = 1.1606913329 Simplifying X = 1.1606913329Subproblem 2
X + -0.3888888889 = -0.771802444 Simplifying X + -0.3888888889 = -0.771802444 Reorder the terms: -0.3888888889 + X = -0.771802444 Solving -0.3888888889 + X = -0.771802444 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '0.3888888889' to each side of the equation. -0.3888888889 + 0.3888888889 + X = -0.771802444 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.0000000000 + X = -0.771802444 + 0.3888888889 X = -0.771802444 + 0.3888888889 Combine like terms: -0.771802444 + 0.3888888889 = -0.3829135551 X = -0.3829135551 Simplifying X = -0.3829135551Solution
The solution to the problem is based on the solutions from the subproblems. X = {1.1606913329, -0.3829135551}
| 10+3x+4x= | | 12^2/2^4 | | Xx-x+5=13 | | -2[1+4b]=-22-3b | | 8+4x(2-4)=6 | | -4a+-7=-5a+6 | | xy+4=7x-3y | | 6x+43= | | (4k+5)(K+1)= | | 3y-3y=4x-4x | | 5xy-4x+3y= | | 5x-3=4(x+3) | | 5(u+7)-7u=29 | | z-7=38 | | 3x+5(4x-8)=98 | | -(-8x+6y+5)= | | 6x^2-11x-7= | | f(-4)=3x^2-7x-32 | | 6x^2-11-7= | | 5a+6b=c | | 2(2x+11)=102 | | 4+(x-3)i=4-16i | | 7.9x+3=6.9x | | 50+3x=11 | | (4x^2-25y^2)=0 | | 11(2x+3)=-55 | | 7.9x+3=6.7x | | 14x+6=67 | | 3w-21w=-2x-9 | | 9x+22+6x-11=26 | | 13-w=-15 | | 4x-2=3(x-3)+12 |