If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 20 = -4x2 + 4x + 15 Reorder the terms: 20 = 15 + 4x + -4x2 Solving 20 = 15 + 4x + -4x2 Solving for variable 'x'. Combine like terms: 20 + -15 = 5 5 + -4x + 4x2 = 15 + 4x + -4x2 + -15 + -4x + 4x2 Reorder the terms: 5 + -4x + 4x2 = 15 + -15 + 4x + -4x + -4x2 + 4x2 Combine like terms: 15 + -15 = 0 5 + -4x + 4x2 = 0 + 4x + -4x + -4x2 + 4x2 5 + -4x + 4x2 = 4x + -4x + -4x2 + 4x2 Combine like terms: 4x + -4x = 0 5 + -4x + 4x2 = 0 + -4x2 + 4x2 5 + -4x + 4x2 = -4x2 + 4x2 Combine like terms: -4x2 + 4x2 = 0 5 + -4x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 1.25 + -1x + x2 = 0 Move the constant term to the right: Add '-1.25' to each side of the equation. 1.25 + -1x + -1.25 + x2 = 0 + -1.25 Reorder the terms: 1.25 + -1.25 + -1x + x2 = 0 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + -1x + x2 = 0 + -1.25 -1x + x2 = 0 + -1.25 Combine like terms: 0 + -1.25 = -1.25 -1x + x2 = -1.25 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = -1.25 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -1.25 + 0.25 Combine like terms: -1.25 + 0.25 = -1 0.25 + -1x + x2 = -1 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -1 Can't calculate square root of the right side. The solution to this equation could not be determined.
| (X-11)(x^2+7x-8)= | | K^3-12=-15 | | Y^2+4=6 | | X^2-4=16 | | 5p+4p^2=-1 | | 4=36x^2 | | 0=-x^2-11x-30 | | 0=2x^2-25x+12 | | 25X^2-20X=-4 | | -8X+16X^2=-1 | | 16-8X+X^2=0 | | 9X^2-6X+1=0 | | 4X^2-16=-16 | | 25-10X+X^2=0 | | -12X+4=-9X^2 | | 36-12X+X^2=0 | | X^2-16X+64=0 | | 5X^2-2X-3=0 | | 4Y^2=-4Y-1 | | 3X^2-2=X^2+6 | | X^2=8X | | Y^2=-7Y-10 | | X^2-3X-10=0 | | Y^2=49 | | 23P=5P^2+24 | | U^3=14U^2+32U | | 3Y^2+2Y-1=0 | | S^2=56S-S^3 | | 6X^2=16X-8 | | X^2-3X-40= | | X^2-22X-75= | | n^2-16N=O |