16x+x^2=45

Simple and best practice solution for 16x+x^2=45 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 16x+x^2=45 equation:


Simplifying
16x + x2 = 45

Solving
16x + x2 = 45

Solving for variable 'x'.

Reorder the terms:
-45 + 16x + x2 = 45 + -45

Combine like terms: 45 + -45 = 0
-45 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '45' to each side of the equation.
-45 + 16x + 45 + x2 = 0 + 45

Reorder the terms:
-45 + 45 + 16x + x2 = 0 + 45

Combine like terms: -45 + 45 = 0
0 + 16x + x2 = 0 + 45
16x + x2 = 0 + 45

Combine like terms: 0 + 45 = 45
16x + x2 = 45

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = 45 + 64

Reorder the terms:
64 + 16x + x2 = 45 + 64

Combine like terms: 45 + 64 = 109
64 + 16x + x2 = 109

Factor a perfect square on the left side:
(x + 8)(x + 8) = 109

Calculate the square root of the right side: 10.440306509

Break this problem into two subproblems by setting 
(x + 8) equal to 10.440306509 and -10.440306509.

Subproblem 1

x + 8 = 10.440306509 Simplifying x + 8 = 10.440306509 Reorder the terms: 8 + x = 10.440306509 Solving 8 + x = 10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 10.440306509 + -8 Combine like terms: 8 + -8 = 0 0 + x = 10.440306509 + -8 x = 10.440306509 + -8 Combine like terms: 10.440306509 + -8 = 2.440306509 x = 2.440306509 Simplifying x = 2.440306509

Subproblem 2

x + 8 = -10.440306509 Simplifying x + 8 = -10.440306509 Reorder the terms: 8 + x = -10.440306509 Solving 8 + x = -10.440306509 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -10.440306509 + -8 Combine like terms: 8 + -8 = 0 0 + x = -10.440306509 + -8 x = -10.440306509 + -8 Combine like terms: -10.440306509 + -8 = -18.440306509 x = -18.440306509 Simplifying x = -18.440306509

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.440306509, -18.440306509}

See similar equations:

| f(x)=14-1/2x^-3 | | 2/5-4(1/2-5/8) | | -2m/16= | | 16/51(3/10) | | 0=-12x^2-9x+1 | | W/3-3=1 | | 14=7/8x | | 7/-4= | | .5+.4s=s-.75 | | 2/5*4/35 | | (U+7)(U-5)= | | 10-2g=8 | | .5-.4s=s-.75 | | xy+3y=-9 | | -7x-2(5x)=-13 | | 3/5(6/13) | | 21+x=546 | | 5n-(100+2n)=4n-2(10+n) | | x+3=5x+1 | | 4e(5x)=20 | | 10s^3-22s^2+4s= | | 1/8(1/5) | | 6(x+6)-8x=30 | | 21n^2+7n+14=11 | | 14+x=24 | | 3x^2-7x=120 | | 4/9(17) | | 10s^3-22s^2+4s=2s | | .5cos(.25x)=0 | | 9+x=522 | | (9-2)/(5-9)= | | (17)4/9 |

Equations solver categories