If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7x2 + 9x = 5 Reorder the terms: 9x + 7x2 = 5 Solving 9x + 7x2 = 5 Solving for variable 'x'. Reorder the terms: -5 + 9x + 7x2 = 5 + -5 Combine like terms: 5 + -5 = 0 -5 + 9x + 7x2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -0.7142857143 + 1.285714286x + x2 = 0 Move the constant term to the right: Add '0.7142857143' to each side of the equation. -0.7142857143 + 1.285714286x + 0.7142857143 + x2 = 0 + 0.7142857143 Reorder the terms: -0.7142857143 + 0.7142857143 + 1.285714286x + x2 = 0 + 0.7142857143 Combine like terms: -0.7142857143 + 0.7142857143 = 0.0000000000 0.0000000000 + 1.285714286x + x2 = 0 + 0.7142857143 1.285714286x + x2 = 0 + 0.7142857143 Combine like terms: 0 + 0.7142857143 = 0.7142857143 1.285714286x + x2 = 0.7142857143 The x term is 1.285714286x. Take half its coefficient (0.642857143). Square it (0.4132653063) and add it to both sides. Add '0.4132653063' to each side of the equation. 1.285714286x + 0.4132653063 + x2 = 0.7142857143 + 0.4132653063 Reorder the terms: 0.4132653063 + 1.285714286x + x2 = 0.7142857143 + 0.4132653063 Combine like terms: 0.7142857143 + 0.4132653063 = 1.1275510206 0.4132653063 + 1.285714286x + x2 = 1.1275510206 Factor a perfect square on the left side: (x + 0.642857143)(x + 0.642857143) = 1.1275510206 Calculate the square root of the right side: 1.061862053 Break this problem into two subproblems by setting (x + 0.642857143) equal to 1.061862053 and -1.061862053.Subproblem 1
x + 0.642857143 = 1.061862053 Simplifying x + 0.642857143 = 1.061862053 Reorder the terms: 0.642857143 + x = 1.061862053 Solving 0.642857143 + x = 1.061862053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.642857143' to each side of the equation. 0.642857143 + -0.642857143 + x = 1.061862053 + -0.642857143 Combine like terms: 0.642857143 + -0.642857143 = 0.000000000 0.000000000 + x = 1.061862053 + -0.642857143 x = 1.061862053 + -0.642857143 Combine like terms: 1.061862053 + -0.642857143 = 0.41900491 x = 0.41900491 Simplifying x = 0.41900491Subproblem 2
x + 0.642857143 = -1.061862053 Simplifying x + 0.642857143 = -1.061862053 Reorder the terms: 0.642857143 + x = -1.061862053 Solving 0.642857143 + x = -1.061862053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.642857143' to each side of the equation. 0.642857143 + -0.642857143 + x = -1.061862053 + -0.642857143 Combine like terms: 0.642857143 + -0.642857143 = 0.000000000 0.000000000 + x = -1.061862053 + -0.642857143 x = -1.061862053 + -0.642857143 Combine like terms: -1.061862053 + -0.642857143 = -1.704719196 x = -1.704719196 Simplifying x = -1.704719196Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.41900491, -1.704719196}
| 2x^2+4x=80 | | (2v-5)(v-4)=0 | | -2x+6-2x=34 | | 3(2x-1)-2(x-3)=5-(x-5) | | 15-(3m+6)=5+4m-17 | | [-5x+6(-3-4x)]+x=2x+1 | | 4+5(4x-2)=(2x+3) | | -6a+7=4a+57 | | 7k-6=-19 | | 5-8(p+4)=-2(4p)-7 | | 0.8x=tanhx | | 3x+9-5x=3 | | (3v+1)(v-5)=0 | | -6(-5+3x)=30 | | 6g-8=5g+16 | | M^2+2m-38=0 | | -6(10-3x)=120 | | 4x-6-5x=-1 | | ln(3x+-2)=4 | | 4(-5x+5)=-80 | | -4x-70=46-8x | | 5(2x-7)-4=5(x-2)+6 | | y=-2+2.5x | | 3(1x+3)=-9 | | y=-2000000*x^2+9000000*x+1000000 | | 6x-7-2x=-39 | | 5+7x+3x=105 | | 21y=x | | 5+3x+7x=-95 | | 10h-4=-2(2-5h) | | 15x-54=-6x+114 | | 15c-18=13c+8 |