1600-4x-x^2=0

Simple and best practice solution for 1600-4x-x^2=0 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 1600-4x-x^2=0 equation:


Simplifying
1600 + -4x + -1x2 = 0

Solving
1600 + -4x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-1600 + 4x + x2 = 0

Move the constant term to the right:

Add '1600' to each side of the equation.
-1600 + 4x + 1600 + x2 = 0 + 1600

Reorder the terms:
-1600 + 1600 + 4x + x2 = 0 + 1600

Combine like terms: -1600 + 1600 = 0
0 + 4x + x2 = 0 + 1600
4x + x2 = 0 + 1600

Combine like terms: 0 + 1600 = 1600
4x + x2 = 1600

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 = 1600 + 4

Reorder the terms:
4 + 4x + x2 = 1600 + 4

Combine like terms: 1600 + 4 = 1604
4 + 4x + x2 = 1604

Factor a perfect square on the left side:
(x + 2)(x + 2) = 1604

Calculate the square root of the right side: 40.049968789

Break this problem into two subproblems by setting 
(x + 2) equal to 40.049968789 and -40.049968789.

Subproblem 1

x + 2 = 40.049968789 Simplifying x + 2 = 40.049968789 Reorder the terms: 2 + x = 40.049968789 Solving 2 + x = 40.049968789 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 = 40.049968789 + -2 Combine like terms: 2 + -2 = 0 0 + x = 40.049968789 + -2 x = 40.049968789 + -2 Combine like terms: 40.049968789 + -2 = 38.049968789 x = 38.049968789 Simplifying x = 38.049968789

Subproblem 2

x + 2 = -40.049968789 Simplifying x + 2 = -40.049968789 Reorder the terms: 2 + x = -40.049968789 Solving 2 + x = -40.049968789 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 = -40.049968789 + -2 Combine like terms: 2 + -2 = 0 0 + x = -40.049968789 + -2 x = -40.049968789 + -2 Combine like terms: -40.049968789 + -2 = -42.049968789 x = -42.049968789 Simplifying x = -42.049968789

Solution

The solution to the problem is based on the solutions from the subproblems. x = {38.049968789, -42.049968789}

See similar equations:

| 2x-11=391 | | z^2-8z=64 | | 88=4w | | (2a+3)-(a-2)=8 | | 2x-11=39 | | 2e+15=6e | | 81=3u | | -4d-15=-3 | | 11x+3=8x-9 | | 10.5-2/3= | | -2x+9=x | | 7p+5=2p+11 | | (10+12x)+(-11+5x)= | | 8(-9x-7)=5x | | 2(x+5)-x=15 | | 2e+1=15 | | 8(e+.25)=2e+14 | | 7x^3=14 | | -3(4x-8)=-6 | | P=q+12+s | | 38=m-(-22) | | 25x^2+22x-2=0 | | 5-6l=3l-11 | | 4(3n+.75)=5n+19 | | 6(2x-1)=q+16 | | P=6-b+c | | 4(.75q+2)=q+16 | | 3(2x+5)=5(x+2) | | x-y-5z=A | | -29=m-20 | | (3x+2)+90+(2x+3)=180 | | x-y-8=A |

Equations solver categories