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 + -2x + 21 Reorder the terms: 0 = 21 + -2x + x2 Solving 0 = 21 + -2x + x2 Solving for variable 'x'. Combine like terms: 0 + -21 = -21 -21 + 2x + -1x2 = 21 + -2x + x2 + -21 + 2x + -1x2 Reorder the terms: -21 + 2x + -1x2 = 21 + -21 + -2x + 2x + x2 + -1x2 Combine like terms: 21 + -21 = 0 -21 + 2x + -1x2 = 0 + -2x + 2x + x2 + -1x2 -21 + 2x + -1x2 = -2x + 2x + x2 + -1x2 Combine like terms: -2x + 2x = 0 -21 + 2x + -1x2 = 0 + x2 + -1x2 -21 + 2x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -21 + 2x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 21 + -2x + x2 = 0 Move the constant term to the right: Add '-21' to each side of the equation. 21 + -2x + -21 + x2 = 0 + -21 Reorder the terms: 21 + -21 + -2x + x2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -2x + x2 = 0 + -21 -2x + x2 = 0 + -21 Combine like terms: 0 + -21 = -21 -2x + x2 = -21 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = -21 + 1 Reorder the terms: 1 + -2x + x2 = -21 + 1 Combine like terms: -21 + 1 = -20 1 + -2x + x2 = -20 Factor a perfect square on the left side: (x + -1)(x + -1) = -20 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 16+4=-2v-8v | | (39)5= | | 4d+5=4d-12 | | 2(b+8)=6(b+2) | | X^2+49-100=0 | | 24y+12x+102=90 | | 5x^2+4=2x^2+2(7x+2) | | (39)-5= | | 3x-6=x-13 | | 54=6s-30 | | 12x+24y+102=90 | | -8-7=-5x-10 | | zx-x=c | | 8(22)= | | -3(2.153)-2(.1304)=6 | | 23/30/8/15 | | xa-a=c | | 8(v-2)=-(3-8v) | | In(x)=2 | | 5/8+6q/11=7q/11+3/4 | | 21+x^2-4x=0 | | 24+5r=5r+4(2r-4) | | 3-150x=2 | | -5.3=9.3z-8.3z-7.2 | | 150+3x=2 | | 2x-9-6x=-4x+17 | | N/10=32.7 | | 10x-30-9x-4=x-5+3 | | 18(3)/27 | | x-6-5x=4+x | | 16+p/5=-3 | | 1/9+1/5*1/7 |