0=-4x^2+5x+5

Simple and best practice solution for 0=-4x^2+5x+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 0=-4x^2+5x+5 equation:


Simplifying
0 = -4x2 + 5x + 5

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

Solving
0 = 5 + 5x + -4x2

Solving for variable 'x'.

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

Reorder the terms:
-5 + -5x + 4x2 = 5 + -5 + 5x + -5x + -4x2 + 4x2

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

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

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

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

Divide each side by '4'.
-1.25 + -1.25x + x2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + -1.25x + 1.25 + x2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + -1.25x + x2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + -1.25x + x2 = 0 + 1.25
-1.25x + x2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
-1.25x + x2 = 1.25

The x term is -1.25x.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25x + 0.390625 + x2 = 1.25 + 0.390625

Reorder the terms:
0.390625 + -1.25x + x2 = 1.25 + 0.390625

Combine like terms: 1.25 + 0.390625 = 1.640625
0.390625 + -1.25x + x2 = 1.640625

Factor a perfect square on the left side:
(x + -0.625)(x + -0.625) = 1.640625

Calculate the square root of the right side: 1.280868846

Break this problem into two subproblems by setting 
(x + -0.625) equal to 1.280868846 and -1.280868846.

Subproblem 1

x + -0.625 = 1.280868846 Simplifying x + -0.625 = 1.280868846 Reorder the terms: -0.625 + x = 1.280868846 Solving -0.625 + x = 1.280868846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = 1.280868846 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = 1.280868846 + 0.625 x = 1.280868846 + 0.625 Combine like terms: 1.280868846 + 0.625 = 1.905868846 x = 1.905868846 Simplifying x = 1.905868846

Subproblem 2

x + -0.625 = -1.280868846 Simplifying x + -0.625 = -1.280868846 Reorder the terms: -0.625 + x = -1.280868846 Solving -0.625 + x = -1.280868846 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + x = -1.280868846 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = -1.280868846 + 0.625 x = -1.280868846 + 0.625 Combine like terms: -1.280868846 + 0.625 = -0.655868846 x = -0.655868846 Simplifying x = -0.655868846

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.905868846, -0.655868846}

See similar equations:

| 3p(2x+3)=15 | | x-13=4(3x-4(x-2)) | | 4=-16/j | | .8x+.05(6-x)=.10(-42) | | 0.33y-5=3 | | x+(x/4)+(x/2)=100 | | 7+8=127 | | 1/5(10j+5k) | | y=2(3)+6 | | a+7/8-a-2/3=4/3 | | 54x^2+36x+6=0 | | -10x-64=118+3x | | 11-12x=-10x-37 | | -168=8(7x+14) | | 12=i*10 | | -60=6x+3(4x+10) | | -2x-51=102-11x | | 7x-6(4x+18)=-193 | | -4x-7(-x-3)=51 | | 4x+63=-7x-124 | | y+6(5)=8 | | y+6(-1)=8 | | w^2=5w+24 | | p^2-8p-96=0 | | 3(a-10)=33 | | 3b+(b-2)+5a= | | 3a+(4a+5b)= | | 3a+(4a+56)= | | 203-4x=32x+19 | | 5(y+7)=45 | | 2x/5=6x/5+6 | | 6(4x+2)= |

Equations solver categories