If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -0.8 = x(0.2x + 0.15) Reorder the terms: -0.8 = x(0.15 + 0.2x) -0.8 = (0.15 * x + 0.2x * x) -0.8 = (0.15x + 0.2x2) Solving -0.8 = 0.15x + 0.2x2 Solving for variable 'x'. Reorder the terms: -0.8 + -0.15x + -0.2x2 = 0.15x + -0.15x + 0.2x2 + -0.2x2 Combine like terms: 0.15x + -0.15x = 0.00 -0.8 + -0.15x + -0.2x2 = 0.00 + 0.2x2 + -0.2x2 -0.8 + -0.15x + -0.2x2 = 0.2x2 + -0.2x2 Combine like terms: 0.2x2 + -0.2x2 = 0.0 -0.8 + -0.15x + -0.2x2 = 0.0 Begin completing the square. Divide all terms by -0.2 the coefficient of the squared term: Divide each side by '-0.2'. 4 + 0.75x + x2 = 0 Move the constant term to the right: Add '-4' to each side of the equation. 4 + 0.75x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 0.75x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 0.75x + x2 = 0 + -4 0.75x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 0.75x + x2 = -4 The x term is 0.75x. Take half its coefficient (0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. 0.75x + 0.140625 + x2 = -4 + 0.140625 Reorder the terms: 0.140625 + 0.75x + x2 = -4 + 0.140625 Combine like terms: -4 + 0.140625 = -3.859375 0.140625 + 0.75x + x2 = -3.859375 Factor a perfect square on the left side: (x + 0.375)(x + 0.375) = -3.859375 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 87x+9-16+3=125.5 | | 2y(y-3)+1=0 | | -2n=16+6n | | (3x-2)(x+2)=18x+4 | | 3+49x=21+39 | | 32z^2-20z-3=0 | | 4k+17+6k=-83 | | 7n-3=5n+13 | | 4g-12=5 | | f(x)=5x^2-30x+6 | | (3x-12)/(4x-16) | | 3/5x15/33 | | 36a-12/12=0 | | 7n-7=5n+13 | | 4p^2-21=0 | | 0=t^3-3t^2-10t+24 | | 10+4h=10 | | 8(s+3)=3 | | 1024x^4-4y^4=0 | | 1.44/1-3/x | | 3/5w=12 | | -4x=7x+6 | | x^2=337 | | (6w-4x-4)(7w-2x-3)= | | 5x-7=-10x+3 | | 7-8x-2=-43+4x-12 | | ln(x)=-1.7 | | a^2-9a-14=0 | | 1.44/1=3/x | | 2(3x+5)=22+5x-3 | | 1.44/1=3x | | (2x)¹/²=8x |