If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 2x2 + 10x + 21 = 0 Reorder the terms: 21 + 10x + 2x2 = 0 Solving 21 + 10x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 10.5 + 5x + x2 = 0 Move the constant term to the right: Add '-10.5' to each side of the equation. 10.5 + 5x + -10.5 + x2 = 0 + -10.5 Reorder the terms: 10.5 + -10.5 + 5x + x2 = 0 + -10.5 Combine like terms: 10.5 + -10.5 = 0.0 0.0 + 5x + x2 = 0 + -10.5 5x + x2 = 0 + -10.5 Combine like terms: 0 + -10.5 = -10.5 5x + x2 = -10.5 The x term is 5x. Take half its coefficient (2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. 5x + 6.25 + x2 = -10.5 + 6.25 Reorder the terms: 6.25 + 5x + x2 = -10.5 + 6.25 Combine like terms: -10.5 + 6.25 = -4.25 6.25 + 5x + x2 = -4.25 Factor a perfect square on the left side: (x + 2.5)(x + 2.5) = -4.25 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 10x=x+45 | | 0.0005x-0.06x+0=0 | | 6x+5=41-3x | | -110+8x=-74 | | 9a+9x+(-2x)=b-a+2x+(-2x) | | 4x+5=5-7x | | 1+2(m+4)=49 | | -8(4s+5)=-18 | | -110+6x=-4 | | 400/20+62+61-5*3+2 | | 5y/y^2-7y-4/2y-14+9/y | | x+9=4x+42 | | 12[x-2]=-4[x-10] | | 368/4+61-5+98*2-4+6 | | (5y/y^2-7y)-(4/2y-14)+(9/y) | | -10-8x=-4 | | 3t*2tsquared=6tsquared | | 198=x+2(x)(2) | | 2500/100+50+98*2-15 | | -10-8x=10 | | y=10/9x+10 | | 3x+5y=120 | | 4x-13=2x+17 | | 32=40x | | 0=-16t^2+30t+4 | | 12[x-9]=-4[x-9] | | 18=b+(-7) | | Xsquared+7x+12=0 | | 14-6(5x-6)=-4 | | 9q-20=3q+16 | | 12[x+8]=-3[x-47] | | 6(9+8k)=-20 |