If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 5x2 + 7x + 21 = 0 Reorder the terms: 21 + 7x + 5x2 = 0 Solving 21 + 7x + 5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 4.2 + 1.4x + x2 = 0 Move the constant term to the right: Add '-4.2' to each side of the equation. 4.2 + 1.4x + -4.2 + x2 = 0 + -4.2 Reorder the terms: 4.2 + -4.2 + 1.4x + x2 = 0 + -4.2 Combine like terms: 4.2 + -4.2 = 0.0 0.0 + 1.4x + x2 = 0 + -4.2 1.4x + x2 = 0 + -4.2 Combine like terms: 0 + -4.2 = -4.2 1.4x + x2 = -4.2 The x term is 1.4x. Take half its coefficient (0.7). Square it (0.49) and add it to both sides. Add '0.49' to each side of the equation. 1.4x + 0.49 + x2 = -4.2 + 0.49 Reorder the terms: 0.49 + 1.4x + x2 = -4.2 + 0.49 Combine like terms: -4.2 + 0.49 = -3.71 0.49 + 1.4x + x2 = -3.71 Factor a perfect square on the left side: (x + 0.7)(x + 0.7) = -3.71 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 129.25-6(18.5)=x | | 11(x-6)=7(x+7) | | (2x(4x+8x)2)2+(2x(4x-8x)2)2=512whatisx | | -6x^2+64x-270=0 | | 322/5.5=x | | 60(1)+x=8(1)+x | | 5-(1.19+.89)=x | | 60(1)+x=80(1)x | | 4xy*dx+((x^2)+1)*dy=0 | | 3a+2b=21 | | 4x-3(2x+5)(4-18x)=2x+4+12(3x-3)(3x-3) | | 3(p-9)=12(p-7) | | a-8=3 | | y^2+3y+2y+2=0 | | 2(x+8)=12(x-10) | | -12p+1=-xp+16 | | (-9-3i)(2+i)= | | -16+4x+1=5 | | 2x-y-z=-3 | | 7/x-3-1/2=3/x-4 | | 17=3x-19 | | 5(n-12)=12(n-9) | | Xp=12p+15 | | A=zv+q | | 12X^3/3X^2 | | 20y-5y=15-5y+5 | | 3/c=3/7 | | 6(a-12)=9(a+10) | | 2x-5/9 | | c/3=3/7 | | 3x-2[x+4(x-5)+3]=2x-2 | | 5(m-8)=12(m-10) |