If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x4 + 4x2 + 21 = 0 Reorder the terms: 21 + 4x2 + x4 = 0 Solving 21 + 4x2 + x4 = 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 + 4x2 + -21 + x4 = 0 + -21 Reorder the terms: 21 + -21 + 4x2 + x4 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + 4x2 + x4 = 0 + -21 4x2 + x4 = 0 + -21 Combine like terms: 0 + -21 = -21 4x2 + x4 = -21 The x term is 4x2. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x2 + 4 + x4 = -21 + 4 Reorder the terms: 4 + 4x2 + x4 = -21 + 4 Combine like terms: -21 + 4 = -17 4 + 4x2 + x4 = -17 Factor a perfect square on the left side: (x2 + 2)(x2 + 2) = -17 Can't calculate square root of the right side. The solution to this equation could not be determined.
| f+2f=7f | | 3y+4y-28=-35 | | 2x-10+y+5+12=60 | | -5(1-5v)+5(-8v-2)=-4v-8v | | 24(t)=16t^2 | | 7=5x+25-2x | | 5c+3m=2c+(2+3*3)m | | 7x-39=2x+3(3x-5) | | (44-b)b=60 | | 4.905x^2+20x+25=0 | | 3x^2-24x+43=0 | | 4y-15=y | | 10x-12=2(x+14) | | z^3+18z^2-21z+1=0 | | 4.905x^2+20x^2+25=0 | | 6n-4(-4n-7)=28-3n | | 8(5h-1)-2(3-h)=7(7h-4) | | logk=-0.9 | | 8y^2+16y+8= | | 9x-7=9x+7 | | 3x+y=4134.58 | | (x-3)(x+5)=(x-1)(x-1) | | 18-4*-2=-2*-2-12 | | 3x+10=-50+-9x | | 11n=100 | | 3x-10=-50+-9x | | 3x-10=-50+-x | | X^2-3y^2-2xy-2x-10y+4=0 | | 3n+6=14 | | 12x-48=9x+24 | | -(-3+4)-3x+9=x | | 2x=4+3y |