3x^2+5x+20=16+x-x^2

Simple and best practice solution for 3x^2+5x+20=16+x-x^2 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3x^2+5x+20=16+x-x^2 equation:


Simplifying
3x2 + 5x + 20 = 16 + x + -1x2

Reorder the terms:
20 + 5x + 3x2 = 16 + x + -1x2

Solving
20 + 5x + 3x2 = 16 + x + -1x2

Solving for variable 'x'.

Reorder the terms:
20 + -16 + 5x + -1x + 3x2 + x2 = 16 + x + -1x2 + -16 + -1x + x2

Combine like terms: 20 + -16 = 4
4 + 5x + -1x + 3x2 + x2 = 16 + x + -1x2 + -16 + -1x + x2

Combine like terms: 5x + -1x = 4x
4 + 4x + 3x2 + x2 = 16 + x + -1x2 + -16 + -1x + x2

Combine like terms: 3x2 + x2 = 4x2
4 + 4x + 4x2 = 16 + x + -1x2 + -16 + -1x + x2

Reorder the terms:
4 + 4x + 4x2 = 16 + -16 + x + -1x + -1x2 + x2

Combine like terms: 16 + -16 = 0
4 + 4x + 4x2 = 0 + x + -1x + -1x2 + x2
4 + 4x + 4x2 = x + -1x + -1x2 + x2

Combine like terms: x + -1x = 0
4 + 4x + 4x2 = 0 + -1x2 + x2
4 + 4x + 4x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
4 + 4x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(1 + x + x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(1 + x + x2)' equal to zero and attempt to solve: Simplifying 1 + x + x2 = 0 Solving 1 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x + x2 = 0 + -1 x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 x + x2 = -1 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. x + 0.25 + x2 = -1 + 0.25 Reorder the terms: 0.25 + x + x2 = -1 + 0.25 Combine like terms: -1 + 0.25 = -0.75 0.25 + x + x2 = -0.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -0.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

See similar equations:

| 100-q+.02q^2=100-2q+.06q^2 | | 9(-2x+4)=6(3x-3) | | 24=4(2h-7) | | 3j^2-8j-4=0 | | 6(x-3)+5=41 | | 0.10(y-9)+0.08y=0.06y-0.07(30) | | 6(x-3)+5=42 | | 18k+k-15k+2k+2k=8 | | 10t^2-20t+4= | | -8y-39=3(y+9) | | 10-m=-10 | | 4[2x-3]=2[3x+1] | | 12y-19y-(-16y)+(-12y)-(-8y)=20 | | y^25=4 | | [9(x+5)-18]-[3(x-3)+2]= | | 5x-47=90 | | C/5=29 | | 2-a/4=3/5 | | 5x+5x+4x-9x=10 | | -38t+4=4.4t-37 | | 6a=38 | | -10q+9q=20 | | S^2+15s+270= | | -2x-1-3x+9= | | 2x+.2x=16 | | 16h-7h=18 | | 2x+.2y=16 | | -2.1+x=3.4 | | 7.8=z4 | | f^3-4f^2+4f=0 | | a+3a+a-2=3 | | 42c^2-49c^8= |

Equations solver categories