(-16x^2)+45x+2.5=5.5

Simple and best practice solution for (-16x^2)+45x+2.5=5.5 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^2)+45x+2.5=5.5 equation:


Simplifying
(-16x2) + 45x + 2.5 = 5.5

Reorder the terms:
2.5 + 45x + (-16x2) = 5.5

Solving
2.5 + 45x + (-16x2) = 5.5

Solving for variable 'x'.

Reorder the terms:
2.5 + -5.5 + 45x + (-16x2) = 5.5 + -5.5

Combine like terms: 2.5 + -5.5 = -3
-3 + 45x + (-16x2) = 5.5 + -5.5

Combine like terms: 5.5 + -5.5 = 0.0
-3 + 45x + (-16x2) = 0.0

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
0.1875 + -2.8125x + x2 = 0.0

Move the constant term to the right:

Add '-0.1875' to each side of the equation.
0.1875 + -2.8125x + -0.1875 + x2 = 0.0 + -0.1875

Reorder the terms:
0.1875 + -0.1875 + -2.8125x + x2 = 0.0 + -0.1875

Combine like terms: 0.1875 + -0.1875 = 0.0000
0.0000 + -2.8125x + x2 = 0.0 + -0.1875
-2.8125x + x2 = 0.0 + -0.1875

Combine like terms: 0.0 + -0.1875 = -0.1875
-2.8125x + x2 = -0.1875

The x term is -2.8125x.  Take half its coefficient (-1.40625).
Square it (1.977539063) and add it to both sides.

Add '1.977539063' to each side of the equation.
-2.8125x + 1.977539063 + x2 = -0.1875 + 1.977539063

Reorder the terms:
1.977539063 + -2.8125x + x2 = -0.1875 + 1.977539063

Combine like terms: -0.1875 + 1.977539063 = 1.790039063
1.977539063 + -2.8125x + x2 = 1.790039063

Factor a perfect square on the left side:
((x) + -1.40625)((x) + -1.40625) = 1.790039063

Calculate the square root of the right side: 1.337923414

Break this problem into two subproblems by setting 
((x) + -1.40625) equal to 1.337923414 and -1.337923414.

Subproblem 1

(x) + -1.40625 = 1.337923414 Simplifying (x) + -1.40625 = 1.337923414 x + -1.40625 = 1.337923414 Reorder the terms: -1.40625 + x = 1.337923414 Solving -1.40625 + x = 1.337923414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = 1.337923414 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = 1.337923414 + 1.40625 x = 1.337923414 + 1.40625 Combine like terms: 1.337923414 + 1.40625 = 2.744173414 x = 2.744173414 Simplifying x = 2.744173414

Subproblem 2

(x) + -1.40625 = -1.337923414 Simplifying (x) + -1.40625 = -1.337923414 x + -1.40625 = -1.337923414 Reorder the terms: -1.40625 + x = -1.337923414 Solving -1.40625 + x = -1.337923414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = -1.337923414 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = -1.337923414 + 1.40625 x = -1.337923414 + 1.40625 Combine like terms: -1.337923414 + 1.40625 = 0.068326586 x = 0.068326586 Simplifying x = 0.068326586

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.744173414, 0.068326586}

See similar equations:

| -1=-2x+3x-2 | | 0.5-3=7 | | 5x^8y^7z= | | 10=16t^2-96t | | 4x(x)+2x-6=0 | | x/18=-7.8 | | 43=-7x+2x-7 | | 2.1n-5.31=8 | | 0.9+3.5= | | 4=16/y | | 12+9y=6y | | 4x(4x)+2x-6=0 | | 2=-3x+5x+4 | | 2(f+2)=18 | | x-18=-7.8 | | 8x^2=62 | | 9=x-5x+5 | | 56x^2-21x=0 | | Y=15.5whatisy | | -5x+6=-8x+3 | | 18+5x=-3(x-1)-7x | | Y=15.5 | | 2000+0.05x=1850+0.06x | | -7(-6-1.16X)=12(x-3.5) | | (x-y)/x=m | | 7x/63 | | 3(2x-6)=2(2x-3) | | 10x+20y=5600 | | 0-1.25= | | 4(x)-3=447 | | -x/2-5=11 | | 8+1.50x=20 |

Equations solver categories