If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 0 = x2 + -6x + 21 Reorder the terms: 0 = 21 + -6x + x2 Solving 0 = 21 + -6x + x2 Solving for variable 'x'. Combine like terms: 0 + -21 = -21 -21 + 6x + -1x2 = 21 + -6x + x2 + -21 + 6x + -1x2 Reorder the terms: -21 + 6x + -1x2 = 21 + -21 + -6x + 6x + x2 + -1x2 Combine like terms: 21 + -21 = 0 -21 + 6x + -1x2 = 0 + -6x + 6x + x2 + -1x2 -21 + 6x + -1x2 = -6x + 6x + x2 + -1x2 Combine like terms: -6x + 6x = 0 -21 + 6x + -1x2 = 0 + x2 + -1x2 -21 + 6x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -21 + 6x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 21 + -6x + x2 = 0 Move the constant term to the right: Add '-21' to each side of the equation. 21 + -6x + -21 + x2 = 0 + -21 Reorder the terms: 21 + -21 + -6x + x2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -6x + x2 = 0 + -21 -6x + x2 = 0 + -21 Combine like terms: 0 + -21 = -21 -6x + x2 = -21 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = -21 + 9 Reorder the terms: 9 + -6x + x2 = -21 + 9 Combine like terms: -21 + 9 = -12 9 + -6x + x2 = -12 Factor a perfect square on the left side: (x + -3)(x + -3) = -12 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 14-16t^2=7 | | 7s-9=45 | | solve-7x+2y=9fory | | 14-2a=5(7a-5)+2a | | 8x(-x^6-2)= | | 155x=(125)(155)+125x | | 3n-1=-11 | | .12x+.32(4-x)=.2(4) | | (0.4285714286x^4y^7)(0.4285714286x^6y^2)(7z^7x^8)(0)= | | 8u=u+42 | | 78+x=-15 | | (x-2)(x+8)=6x | | 3+4a=6a-5 | | 2(X+5)+4(X-1)=0 | | 20x+10y=70 | | 3x-9=-5x+23 | | 1.2d-1.6=6.8 | | 5(x+z)-7=5x+3 | | 13-3y=4 | | b^2+17b=0 | | 15-y=6 | | t/32=7/16 | | 7v+3=38 | | 150x=(120)(150)+120x | | 3w^2+6w+6=0 | | 8c=2c+24 | | 2-4(2+3a)=-2a+14 | | t=v+k | | 0.5x+2-1.5x=1.5x-6 | | 15x+2y=72 | | 4.3v-6=8+4b+3 | | 5+2*n=7-4*n |