If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7x2 + -8.1x + 5.4 = 0 Reorder the terms: 5.4 + -8.1x + 7x2 = 0 Solving 5.4 + -8.1x + 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'. 0.7714285714 + -1.157142857x + x2 = 0 Move the constant term to the right: Add '-0.7714285714' to each side of the equation. 0.7714285714 + -1.157142857x + -0.7714285714 + x2 = 0 + -0.7714285714 Reorder the terms: 0.7714285714 + -0.7714285714 + -1.157142857x + x2 = 0 + -0.7714285714 Combine like terms: 0.7714285714 + -0.7714285714 = 0.0000000000 0.0000000000 + -1.157142857x + x2 = 0 + -0.7714285714 -1.157142857x + x2 = 0 + -0.7714285714 Combine like terms: 0 + -0.7714285714 = -0.7714285714 -1.157142857x + x2 = -0.7714285714 The x term is -1.157142857x. Take half its coefficient (-0.5785714285). Square it (0.3347448979) and add it to both sides. Add '0.3347448979' to each side of the equation. -1.157142857x + 0.3347448979 + x2 = -0.7714285714 + 0.3347448979 Reorder the terms: 0.3347448979 + -1.157142857x + x2 = -0.7714285714 + 0.3347448979 Combine like terms: -0.7714285714 + 0.3347448979 = -0.4366836735 0.3347448979 + -1.157142857x + x2 = -0.4366836735 Factor a perfect square on the left side: (x + -0.5785714285)(x + -0.5785714285) = -0.4366836735 Can't calculate square root of the right side. The solution to this equation could not be determined.
| (x^2-3x)-(2x^2-5x)=0 | | 3(y-8)=-3y+24 | | (m^2-m)+(2m+m^2)=0 | | (2+x)-3x-2(10x+1)=3x+3 | | 16x^2-800x+4000=0 | | 9.2x+8.01=-10.8x+7.59 | | 5-X-1-3X= | | 60+1.50x=5.50x+2 | | 9x^2+12x-4=equation | | 2/18-15=12 | | -0.06x=4.8 | | -0.06=-4.8 | | 0.3x+0.5=-0.1 | | -4.6x+1.4=-21.6 | | (50-2a)(40-2a)=118 | | 3(5x+-4)=2(4x+6) | | 7b-2-3b=18 | | -0.6x+8.65=-0.4x+7.85 | | 3(2x+1)=2X+-9 | | 44+3x=99-25x | | 3ln(5x)-2lnx=7 | | 4(2x-1.1)=9x-4.4 | | 4+4(5x-5)=9-3(2x+1) | | 4x+9+10x=18-10 | | d(8d-8)=-1 | | 71x-90=1046 | | 73x-84=200 | | X+(X-9)=41 | | tanx=1.7175 | | 6+2.5x=22 | | 1/2x4^-2 | | x^5-20x^3+100x=0 |