If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + 3x + 21 = 0 Reorder the terms: 21 + 3x + x2 = 0 Solving 21 + 3x + x2 = 0 Solving for variable 'x'. Begin completing the square. 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.
| 4y=40 | | -4.4(-7+2x)=92.4 | | 9+(x*2)-6=17 | | x^2=-9000+18 | | 3x^2+27x+36=0 | | 9000=-x^2+18 | | 2x+x-21=36 | | 44=x(12-2x)(9-2x) | | 4+7f=f+12 | | 2x^2+27x+36=0 | | 1(x-2)=-4x+23 | | 6X=-13-2Y | | 16p+7=p-7 | | 3b-5= | | x^2+27x+72=0 | | 20-0.5m=10+0.8m | | y=500-20x | | t(3+1)=0 | | 4-5w=-36 | | 6x-2=-4+2 | | -(-8y-2z+6)= | | 10273.5776=4*3.14*r^2 | | 9+4x=15+-2 | | (19b-4)-6(3b+4)=-5 | | (x+0.2)(x+4.8)=0 | | (-4)b+9=[-7) | | 8x-3y+2x+6y= | | a+12a=5 | | 9x+5x+2+6=3x+4+10x | | 8x-3y=2x+6y | | 7+3(2x+6)=-4+6(4x-5) | | .8x=370000 |