If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -1x2 + 3x + -21 = 0 Reorder the terms: -21 + 3x + -1x2 = 0 Solving -21 + 3x + -1x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 21 + -3x + x2 = 0 Move the constant term to the right: Add '-21' to each side of the equation. 21 + -3x + -21 + x2 = 0 + -21 Reorder the terms: 21 + -21 + -3x + x2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -3x + x2 = 0 + -21 -3x + x2 = 0 + -21 Combine like terms: 0 + -21 = -21 -3x + x2 = -21 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = -21 + 2.25 Reorder the terms: 2.25 + -3x + x2 = -21 + 2.25 Combine like terms: -21 + 2.25 = -18.75 2.25 + -3x + x2 = -18.75 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = -18.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 1x+2=4x-5 | | y=x(4+-2x)(5+-2x) | | 3+2x-5x^2= | | 3sinx+1=-1 | | 18+3x-2x^2= | | 4x=-94 | | yr+(x+y)s+xt=0 | | 2-7x+5x^2= | | 45-45= | | 1=.8x+x^2 | | -3x^2+11=17 | | 56a+17.9=589.1 | | 2+25x^2-15x= | | 7+x=-63 | | 10x^2-13x+5= | | 9+10x^2-21y= | | 48+6x^2-44x= | | 6x^2-25x+4= | | 4.8y-6.9=3.18 | | 2x^2+10x+5= | | 4y^2-12=0equation | | 2x+x=b | | x^2+7x+8= | | 97=6(t-5)+8t | | 6(n+1)(n+1)+n(n+1)(2n+1)=0 | | (n+1)(n+1)+n(n+1)(2n+1)=0 | | (n+1)(n+1+1)(2(n+1)+1)=0 | | n(n+1)(2n+1)=0 | | n(2n)=0 | | 2n(n*n)=0 | | 0.6y+0.4=1 | | 9x-13=11x+27 |