-x^2+4x=-35

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


Simplifying
-1x2 + 4x = -35

Reorder the terms:
4x + -1x2 = -35

Solving
4x + -1x2 = -35

Solving for variable 'x'.

Reorder the terms:
35 + 4x + -1x2 = -35 + 35

Combine like terms: -35 + 35 = 0
35 + 4x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-35 + -4x + x2 = 0

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + -4x + 35 + x2 = 0 + 35

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

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

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

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 35 + 4

Reorder the terms:
4 + -4x + x2 = 35 + 4

Combine like terms: 35 + 4 = 39
4 + -4x + x2 = 39

Factor a perfect square on the left side:
(x + -2)(x + -2) = 39

Calculate the square root of the right side: 6.244997998

Break this problem into two subproblems by setting 
(x + -2) equal to 6.244997998 and -6.244997998.

Subproblem 1

x + -2 = 6.244997998 Simplifying x + -2 = 6.244997998 Reorder the terms: -2 + x = 6.244997998 Solving -2 + x = 6.244997998 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 6.244997998 + 2 Combine like terms: -2 + 2 = 0 0 + x = 6.244997998 + 2 x = 6.244997998 + 2 Combine like terms: 6.244997998 + 2 = 8.244997998 x = 8.244997998 Simplifying x = 8.244997998

Subproblem 2

x + -2 = -6.244997998 Simplifying x + -2 = -6.244997998 Reorder the terms: -2 + x = -6.244997998 Solving -2 + x = -6.244997998 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -6.244997998 + 2 Combine like terms: -2 + 2 = 0 0 + x = -6.244997998 + 2 x = -6.244997998 + 2 Combine like terms: -6.244997998 + 2 = -4.244997998 x = -4.244997998 Simplifying x = -4.244997998

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.244997998, -4.244997998}

See similar equations:

| 23/11684 | | log(67)=log(23*x) | | -3a^5+12a^4-15a= | | 0.6x-2=0.66x-1 | | 8(7a+11)+8a=-9a-10(1-8a) | | -(7x-5)-(7x-5)+5=-13(x-1)-(5x+13)+3 | | (x^4+1)(x^2+1)=0 | | 5x(5x)+21x+22=0 | | 6.49x-0.6-5.31x=2.323 | | 2(4x-2)=2(2x+4) | | x^5+x^5=0 | | 24/22=84/n | | 3(x+2)=4x+3 | | t(t)-8t+15=0 | | (x^4+1)(x+1)=0 | | 20/12=t/30 | | 7ab-ab= | | 7/43x | | (x^3+1)(x^2+1)=0 | | 11(n-5)-6n=10-7(-1-11n) | | x(x)+x=42 | | 6x-42=54 | | 5x+9x-2x= | | 1495+0.13x=50.00 | | -7=1-5x+x | | (x^2-1)(x^4-1)=0 | | 2(x+3)=3.4(8x-12) | | 8x^2+34xy-84y=0 | | (x-1)(x^4-1)=0 | | 7(2t-3)=3(4+3) | | (x^3-1)(x^2-1)=0 | | -4(2b+9)+11b=-4(b+2) |

Equations solver categories