If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -7x2 + -4x + 8 = 0 Reorder the terms: 8 + -4x + -7x2 = 0 Solving 8 + -4x + -7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -7 the coefficient of the squared term: Divide each side by '-7'. -1.142857143 + 0.5714285714x + x2 = 0 Move the constant term to the right: Add '1.142857143' to each side of the equation. -1.142857143 + 0.5714285714x + 1.142857143 + x2 = 0 + 1.142857143 Reorder the terms: -1.142857143 + 1.142857143 + 0.5714285714x + x2 = 0 + 1.142857143 Combine like terms: -1.142857143 + 1.142857143 = 0.000000000 0.000000000 + 0.5714285714x + x2 = 0 + 1.142857143 0.5714285714x + x2 = 0 + 1.142857143 Combine like terms: 0 + 1.142857143 = 1.142857143 0.5714285714x + x2 = 1.142857143 The x term is 0.5714285714x. Take half its coefficient (0.2857142857). Square it (0.08163265305) and add it to both sides. Add '0.08163265305' to each side of the equation. 0.5714285714x + 0.08163265305 + x2 = 1.142857143 + 0.08163265305 Reorder the terms: 0.08163265305 + 0.5714285714x + x2 = 1.142857143 + 0.08163265305 Combine like terms: 1.142857143 + 0.08163265305 = 1.22448979605 0.08163265305 + 0.5714285714x + x2 = 1.22448979605 Factor a perfect square on the left side: (x + 0.2857142857)(x + 0.2857142857) = 1.22448979605 Calculate the square root of the right side: 1.10656667 Break this problem into two subproblems by setting (x + 0.2857142857) equal to 1.10656667 and -1.10656667.Subproblem 1
x + 0.2857142857 = 1.10656667 Simplifying x + 0.2857142857 = 1.10656667 Reorder the terms: 0.2857142857 + x = 1.10656667 Solving 0.2857142857 + x = 1.10656667 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + x = 1.10656667 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + x = 1.10656667 + -0.2857142857 x = 1.10656667 + -0.2857142857 Combine like terms: 1.10656667 + -0.2857142857 = 0.8208523843 x = 0.8208523843 Simplifying x = 0.8208523843Subproblem 2
x + 0.2857142857 = -1.10656667 Simplifying x + 0.2857142857 = -1.10656667 Reorder the terms: 0.2857142857 + x = -1.10656667 Solving 0.2857142857 + x = -1.10656667 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + x = -1.10656667 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + x = -1.10656667 + -0.2857142857 x = -1.10656667 + -0.2857142857 Combine like terms: -1.10656667 + -0.2857142857 = -1.3922809557 x = -1.3922809557 Simplifying x = -1.3922809557Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.8208523843, -1.3922809557}
| 9x+3-2x=8+6x+1 | | 3w+6=w+4 | | x^2+3x+11=y | | x^2-125X+3400=0 | | 10-(1-2x)=-5(2x-1) | | 15+4x=5x+10 | | 2(5z-1)-4(z+5)=3(z+1) | | 15-.75x=13-5x | | B+cox=d | | -3x^2=-5-14x | | n^2+2n-85=0 | | 11p=122 | | 11CM=3XCM | | 8x+1=-8x-1 | | 10x+14=36-2x | | 5z-4z=13 | | -32=5w+3 | | 3k-2k=11 | | 7r^2-3=0 | | 7-8k=8k-7 | | 3d+3-5d-8+1+d=(3x+2)-(6+3x) | | 2q+8q=20 | | -4x-7=5p+11 | | 23=33 | | 17-(5m+4)=3+4m-17 | | 25+20x=1.05 | | W+w+w+w+4= | | 0=-x^2+16x+36 | | 5b-3b=8 | | 2(x-4)-1=-2(-9x+2)-6x | | 6h-5h=9 | | (11x+2)-3= |