4.9x^2+19x=11

Simple and best practice solution for 4.9x^2+19x=11 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 4.9x^2+19x=11 equation:


Simplifying
4.9x2 + 19x = 11

Reorder the terms:
19x + 4.9x2 = 11

Solving
19x + 4.9x2 = 11

Solving for variable 'x'.

Reorder the terms:
-11 + 19x + 4.9x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + 19x + 4.9x2 = 0

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

Divide each side by '4.9'.
-2.244897959 + 3.87755102x + x2 = 0

Move the constant term to the right:

Add '2.244897959' to each side of the equation.
-2.244897959 + 3.87755102x + 2.244897959 + x2 = 0 + 2.244897959

Reorder the terms:
-2.244897959 + 2.244897959 + 3.87755102x + x2 = 0 + 2.244897959

Combine like terms: -2.244897959 + 2.244897959 = 0.000000000
0.000000000 + 3.87755102x + x2 = 0 + 2.244897959
3.87755102x + x2 = 0 + 2.244897959

Combine like terms: 0 + 2.244897959 = 2.244897959
3.87755102x + x2 = 2.244897959

The x term is 3.87755102x.  Take half its coefficient (1.93877551).
Square it (3.758850478) and add it to both sides.

Add '3.758850478' to each side of the equation.
3.87755102x + 3.758850478 + x2 = 2.244897959 + 3.758850478

Reorder the terms:
3.758850478 + 3.87755102x + x2 = 2.244897959 + 3.758850478

Combine like terms: 2.244897959 + 3.758850478 = 6.003748437
3.758850478 + 3.87755102x + x2 = 6.003748437

Factor a perfect square on the left side:
(x + 1.93877551)(x + 1.93877551) = 6.003748437

Calculate the square root of the right side: 2.45025477

Break this problem into two subproblems by setting 
(x + 1.93877551) equal to 2.45025477 and -2.45025477.

Subproblem 1

x + 1.93877551 = 2.45025477 Simplifying x + 1.93877551 = 2.45025477 Reorder the terms: 1.93877551 + x = 2.45025477 Solving 1.93877551 + x = 2.45025477 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.93877551' to each side of the equation. 1.93877551 + -1.93877551 + x = 2.45025477 + -1.93877551 Combine like terms: 1.93877551 + -1.93877551 = 0.00000000 0.00000000 + x = 2.45025477 + -1.93877551 x = 2.45025477 + -1.93877551 Combine like terms: 2.45025477 + -1.93877551 = 0.51147926 x = 0.51147926 Simplifying x = 0.51147926

Subproblem 2

x + 1.93877551 = -2.45025477 Simplifying x + 1.93877551 = -2.45025477 Reorder the terms: 1.93877551 + x = -2.45025477 Solving 1.93877551 + x = -2.45025477 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.93877551' to each side of the equation. 1.93877551 + -1.93877551 + x = -2.45025477 + -1.93877551 Combine like terms: 1.93877551 + -1.93877551 = 0.00000000 0.00000000 + x = -2.45025477 + -1.93877551 x = -2.45025477 + -1.93877551 Combine like terms: -2.45025477 + -1.93877551 = -4.38903028 x = -4.38903028 Simplifying x = -4.38903028

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.51147926, -4.38903028}

See similar equations:

| 2(9-x)+1=4x-(2x-11) | | 11=t+6x | | 4(x-3)=5(x-4) | | 9-x=4x-6 | | 10z-4z=14 | | (m+5)(m-2)= | | -44=-sk-2 | | 19v-18v=-12 | | 8t-18=3t+7 | | 12t^2-44t=45 | | 5(6*0.2)+.2=7 | | t=-12+4 | | 4(x-6)=-24+4x | | -6z-7z=2z+9-5z | | 1.5x*x=12.92 | | 8a-3b-2a+2b= | | 4x=127 | | t=4(v-3) | | -3z=-6 | | 2x+4x-10=-10+6x | | 2(g-2)=6 | | 4x-7=11x+9 | | 7x-32=-13x+8 | | 4t-18+(-2)=16 | | 13w-18=10w | | 3(5r+7)-4(r-2)= | | 6x-13=62 | | 3z+3z=16+8z | | 50-(7+3y)=4 | | 5z=-4.5 | | -6=3/7m | | 7x-4+3x=4(x-2)+10 |

Equations solver categories