3=4.905(x^2)+x

Simple and best practice solution for 3=4.905(x^2)+x 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 3=4.905(x^2)+x equation:


Simplifying
3 = 4.905(x2) + x

Reorder the terms:
3 = x + 4.905x2

Solving
3 = x + 4.905x2

Solving for variable 'x'.

Reorder the terms:
3 + -1x + -4.905x2 = x + -1x + 4.905x2 + -4.905x2

Combine like terms: x + -1x = 0
3 + -1x + -4.905x2 = 0 + 4.905x2 + -4.905x2
3 + -1x + -4.905x2 = 4.905x2 + -4.905x2

Combine like terms: 4.905x2 + -4.905x2 = 0.000
3 + -1x + -4.905x2 = 0.000

Begin completing the square.  Divide all terms by
-4.905 the coefficient of the squared term: 

Divide each side by '-4.905'.
-0.6116207951 + 0.2038735984x + x2 = 0

Move the constant term to the right:

Add '0.6116207951' to each side of the equation.
-0.6116207951 + 0.2038735984x + 0.6116207951 + x2 = 0 + 0.6116207951

Reorder the terms:
-0.6116207951 + 0.6116207951 + 0.2038735984x + x2 = 0 + 0.6116207951

Combine like terms: -0.6116207951 + 0.6116207951 = 0.0000000000
0.0000000000 + 0.2038735984x + x2 = 0 + 0.6116207951
0.2038735984x + x2 = 0 + 0.6116207951

Combine like terms: 0 + 0.6116207951 = 0.6116207951
0.2038735984x + x2 = 0.6116207951

The x term is 0.2038735984x.  Take half its coefficient (0.1019367992).
Square it (0.01039111103) and add it to both sides.

Add '0.01039111103' to each side of the equation.
0.2038735984x + 0.01039111103 + x2 = 0.6116207951 + 0.01039111103

Reorder the terms:
0.01039111103 + 0.2038735984x + x2 = 0.6116207951 + 0.01039111103

Combine like terms: 0.6116207951 + 0.01039111103 = 0.62201190613
0.01039111103 + 0.2038735984x + x2 = 0.62201190613

Factor a perfect square on the left side:
(x + 0.1019367992)(x + 0.1019367992) = 0.62201190613

Calculate the square root of the right side: 0.788677314

Break this problem into two subproblems by setting 
(x + 0.1019367992) equal to 0.788677314 and -0.788677314.

Subproblem 1

x + 0.1019367992 = 0.788677314 Simplifying x + 0.1019367992 = 0.788677314 Reorder the terms: 0.1019367992 + x = 0.788677314 Solving 0.1019367992 + x = 0.788677314 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1019367992' to each side of the equation. 0.1019367992 + -0.1019367992 + x = 0.788677314 + -0.1019367992 Combine like terms: 0.1019367992 + -0.1019367992 = 0.0000000000 0.0000000000 + x = 0.788677314 + -0.1019367992 x = 0.788677314 + -0.1019367992 Combine like terms: 0.788677314 + -0.1019367992 = 0.6867405148 x = 0.6867405148 Simplifying x = 0.6867405148

Subproblem 2

x + 0.1019367992 = -0.788677314 Simplifying x + 0.1019367992 = -0.788677314 Reorder the terms: 0.1019367992 + x = -0.788677314 Solving 0.1019367992 + x = -0.788677314 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1019367992' to each side of the equation. 0.1019367992 + -0.1019367992 + x = -0.788677314 + -0.1019367992 Combine like terms: 0.1019367992 + -0.1019367992 = 0.0000000000 0.0000000000 + x = -0.788677314 + -0.1019367992 x = -0.788677314 + -0.1019367992 Combine like terms: -0.788677314 + -0.1019367992 = -0.8906141132 x = -0.8906141132 Simplifying x = -0.8906141132

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6867405148, -0.8906141132}

See similar equations:

| 6+3(x-2)=16(3-x) | | 10-4x^2=3 | | 6x^2-4-5x=0 | | y=-2x^2+8x-1 | | 2(x+6)-10=3x+8 | | 7b-2b+5=b-3 | | 9-2(x-3)=17(2-x) | | x^2=16+6x | | 6x^2-5x+(-21)=0 | | 15-2(x-5)=12(4-x) | | s^2-11s+24=0 | | 5a-2a=-36 | | 28+2x=3x-17 | | a^2-4a+32=0 | | 2x+3=5y+4 | | a^2-4a=32 | | 5a-7=3a+5 | | (X^2)+2x=15 | | 45(t)=5t^2+50t | | 2(4x-22)=-25 | | w^2-6w=7 | | 3p^2-16p=-5 | | x^2=10+6x | | ln(x+2)+ln(x)=ln(x+56) | | x+2+x=68 | | 5k^2-4=19k | | 5k^2+2x=72 | | 12(3x+3)-7(2x-6)=2x-22 | | 2x^2-3x+3=0 | | 3x-2(x+6)=4(x+1)-5 | | 6(4x-5)=3(8x+9) | | x-1+2=0 |

Equations solver categories