49x^2+4x-8=7x

Simple and best practice solution for 49x^2+4x-8=7x 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 49x^2+4x-8=7x equation:


Simplifying
49x2 + 4x + -8 = 7x

Reorder the terms:
-8 + 4x + 49x2 = 7x

Solving
-8 + 4x + 49x2 = 7x

Solving for variable 'x'.

Reorder the terms:
-8 + 4x + -7x + 49x2 = 7x + -7x

Combine like terms: 4x + -7x = -3x
-8 + -3x + 49x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
-8 + -3x + 49x2 = 0

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

Divide each side by '49'.
-0.1632653061 + -0.0612244898x + x2 = 0

Move the constant term to the right:

Add '0.1632653061' to each side of the equation.
-0.1632653061 + -0.0612244898x + 0.1632653061 + x2 = 0 + 0.1632653061

Reorder the terms:
-0.1632653061 + 0.1632653061 + -0.0612244898x + x2 = 0 + 0.1632653061

Combine like terms: -0.1632653061 + 0.1632653061 = 0.0000000000
0.0000000000 + -0.0612244898x + x2 = 0 + 0.1632653061
-0.0612244898x + x2 = 0 + 0.1632653061

Combine like terms: 0 + 0.1632653061 = 0.1632653061
-0.0612244898x + x2 = 0.1632653061

The x term is -0.0612244898x.  Take half its coefficient (-0.0306122449).
Square it (0.0009371095378) and add it to both sides.

Add '0.0009371095378' to each side of the equation.
-0.0612244898x + 0.0009371095378 + x2 = 0.1632653061 + 0.0009371095378

Reorder the terms:
0.0009371095378 + -0.0612244898x + x2 = 0.1632653061 + 0.0009371095378

Combine like terms: 0.1632653061 + 0.0009371095378 = 0.1642024156378
0.0009371095378 + -0.0612244898x + x2 = 0.1642024156378

Factor a perfect square on the left side:
(x + -0.0306122449)(x + -0.0306122449) = 0.1642024156378

Calculate the square root of the right side: 0.405218972

Break this problem into two subproblems by setting 
(x + -0.0306122449) equal to 0.405218972 and -0.405218972.

Subproblem 1

x + -0.0306122449 = 0.405218972 Simplifying x + -0.0306122449 = 0.405218972 Reorder the terms: -0.0306122449 + x = 0.405218972 Solving -0.0306122449 + x = 0.405218972 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0306122449' to each side of the equation. -0.0306122449 + 0.0306122449 + x = 0.405218972 + 0.0306122449 Combine like terms: -0.0306122449 + 0.0306122449 = 0.0000000000 0.0000000000 + x = 0.405218972 + 0.0306122449 x = 0.405218972 + 0.0306122449 Combine like terms: 0.405218972 + 0.0306122449 = 0.4358312169 x = 0.4358312169 Simplifying x = 0.4358312169

Subproblem 2

x + -0.0306122449 = -0.405218972 Simplifying x + -0.0306122449 = -0.405218972 Reorder the terms: -0.0306122449 + x = -0.405218972 Solving -0.0306122449 + x = -0.405218972 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0306122449' to each side of the equation. -0.0306122449 + 0.0306122449 + x = -0.405218972 + 0.0306122449 Combine like terms: -0.0306122449 + 0.0306122449 = 0.0000000000 0.0000000000 + x = -0.405218972 + 0.0306122449 x = -0.405218972 + 0.0306122449 Combine like terms: -0.405218972 + 0.0306122449 = -0.3746067271 x = -0.3746067271 Simplifying x = -0.3746067271

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4358312169, -0.3746067271}

See similar equations:

| (0.018+b)*0.01=0.018 | | a^2+a+1=0equation | | a^2+a-1=0equation | | 2/3n-3/5n=1 | | 5/2x-7/2y=-1 | | 3(-3n+4)+6n=12 | | 5n=3(n+12) | | z^2+(4+2i)z+3-3i=0 | | x-2/135 | | 8c-9=-129 | | y/1-y | | 7=In(x+9) | | 8x+y=11+7y | | 1y=8-3y | | 2(x+4)=2(10x+1) | | x^2-5kx+5k-1=0 | | 3x=0.10-x | | 5xt-2xt= | | z^4=4i | | 3p+2q=5 | | x/5=36/20 | | x/4-2/5 | | 3.67=log(x) | | 4d+3=d-6 | | 2m-6=m+2 | | x^2-x-1=2x+1 | | X^2+28x=16 | | 12-(5x+3)+7(x+1)=8-2x | | logx=-0.45 | | 60+-25x=35x+20 | | t^2-5t-5=0 | | 14y+y^2+48=0 |

Equations solver categories