5x^2+4x^2-35x-28=

Simple and best practice solution for 5x^2+4x^2-35x-28= 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 5x^2+4x^2-35x-28= equation:


Simplifying
5x2 + 4x2 + -35x + -28 = 0

Reorder the terms:
-28 + -35x + 5x2 + 4x2 = 0

Combine like terms: 5x2 + 4x2 = 9x2
-28 + -35x + 9x2 = 0

Solving
-28 + -35x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-3.111111111 + -3.888888889x + x2 = 0

Move the constant term to the right:

Add '3.111111111' to each side of the equation.
-3.111111111 + -3.888888889x + 3.111111111 + x2 = 0 + 3.111111111

Reorder the terms:
-3.111111111 + 3.111111111 + -3.888888889x + x2 = 0 + 3.111111111

Combine like terms: -3.111111111 + 3.111111111 = 0.000000000
0.000000000 + -3.888888889x + x2 = 0 + 3.111111111
-3.888888889x + x2 = 0 + 3.111111111

Combine like terms: 0 + 3.111111111 = 3.111111111
-3.888888889x + x2 = 3.111111111

The x term is -3.888888889x.  Take half its coefficient (-1.944444445).
Square it (3.780864200) and add it to both sides.

Add '3.780864200' to each side of the equation.
-3.888888889x + 3.780864200 + x2 = 3.111111111 + 3.780864200

Reorder the terms:
3.780864200 + -3.888888889x + x2 = 3.111111111 + 3.780864200

Combine like terms: 3.111111111 + 3.780864200 = 6.891975311
3.780864200 + -3.888888889x + x2 = 6.891975311

Factor a perfect square on the left side:
(x + -1.944444445)(x + -1.944444445) = 6.891975311

Calculate the square root of the right side: 2.625257189

Break this problem into two subproblems by setting 
(x + -1.944444445) equal to 2.625257189 and -2.625257189.

Subproblem 1

x + -1.944444445 = 2.625257189 Simplifying x + -1.944444445 = 2.625257189 Reorder the terms: -1.944444445 + x = 2.625257189 Solving -1.944444445 + x = 2.625257189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.944444445' to each side of the equation. -1.944444445 + 1.944444445 + x = 2.625257189 + 1.944444445 Combine like terms: -1.944444445 + 1.944444445 = 0.000000000 0.000000000 + x = 2.625257189 + 1.944444445 x = 2.625257189 + 1.944444445 Combine like terms: 2.625257189 + 1.944444445 = 4.569701634 x = 4.569701634 Simplifying x = 4.569701634

Subproblem 2

x + -1.944444445 = -2.625257189 Simplifying x + -1.944444445 = -2.625257189 Reorder the terms: -1.944444445 + x = -2.625257189 Solving -1.944444445 + x = -2.625257189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.944444445' to each side of the equation. -1.944444445 + 1.944444445 + x = -2.625257189 + 1.944444445 Combine like terms: -1.944444445 + 1.944444445 = 0.000000000 0.000000000 + x = -2.625257189 + 1.944444445 x = -2.625257189 + 1.944444445 Combine like terms: -2.625257189 + 1.944444445 = -0.680812744 x = -0.680812744 Simplifying x = -0.680812744

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.569701634, -0.680812744}

See similar equations:

| -5t+5/20-2t-7/4-t+2/8=0 | | 3x-5=2.5x+3-(x-4) | | -3(4n+3)+4(6n+1)=43 | | 3x+11=200 | | 25=3m+4 | | -3(2a-4)=3a+4-2a | | 5+6x=8x-13 | | -3x+5=4x-44 | | 1.25x+2y=40 | | =-x^2+2x-5 | | d+12-3d=5d-6 | | -11+x=12 | | 0.67a-8=11 | | 9x+1=4x+6 | | -7x+1=-5x-5 | | (3x-5)-(x-3)=12 | | 9-64u^2= | | 12xn+10=22 | | -4x+5=5x+-40 | | 5y^2-13y=6 | | 18=b+555 | | 6(5x-11)-12(2x+5)=0 | | 2678*d=87.860 | | -7w+7=5w-17 | | 4x-2x-8=10 | | 6v^3y^7-9vw^9y^8= | | 4y+5=11 | | 2(42+w)+2w=524 | | 3/5(p+3)= | | X^2-5x=-13 | | -59+-17=n | | x-.4x=9000 |

Equations solver categories