-4x^2+5x+3=0

Simple and best practice solution for -4x^2+5x+3=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 -4x^2+5x+3=0 equation:


Simplifying
-4x2 + 5x + 3 = 0

Reorder the terms:
3 + 5x + -4x2 = 0

Solving
3 + 5x + -4x2 = 0

Solving for variable 'x'.

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

Divide each side by '-4'.
-0.75 + -1.25x + x2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -1.25x + 0.75 + x2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -1.25x + x2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -1.25x + x2 = 0 + 0.75
-1.25x + x2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-1.25x + x2 = 0.75

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 = 0.75 + 0.390625

Reorder the terms:
0.390625 + -1.25x + x2 = 0.75 + 0.390625

Combine like terms: 0.75 + 0.390625 = 1.140625
0.390625 + -1.25x + x2 = 1.140625

Factor a perfect square on the left side:
(x + -0.625)(x + -0.625) = 1.140625

Calculate the square root of the right side: 1.068000468

Break this problem into two subproblems by setting 
(x + -0.625) equal to 1.068000468 and -1.068000468.

Subproblem 1

x + -0.625 = 1.068000468 Simplifying x + -0.625 = 1.068000468 Reorder the terms: -0.625 + x = 1.068000468 Solving -0.625 + x = 1.068000468 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 = 1.068000468 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = 1.068000468 + 0.625 x = 1.068000468 + 0.625 Combine like terms: 1.068000468 + 0.625 = 1.693000468 x = 1.693000468 Simplifying x = 1.693000468

Subproblem 2

x + -0.625 = -1.068000468 Simplifying x + -0.625 = -1.068000468 Reorder the terms: -0.625 + x = -1.068000468 Solving -0.625 + x = -1.068000468 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 = -1.068000468 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + x = -1.068000468 + 0.625 x = -1.068000468 + 0.625 Combine like terms: -1.068000468 + 0.625 = -0.443000468 x = -0.443000468 Simplifying x = -0.443000468

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.693000468, -0.443000468}

See similar equations:

| 58-3x=6x+16 | | 5x+3=9x-17 | | 3069x-2107=31(99x-70) | | log(a+b)=0 | | -2x^2+7x+8=0 | | f(x)=3x^2-7f(-3) | | x+2x-1=51 | | x+6/1+4=6 | | x+25=2x-1-25 | | 5v=5v | | 4x^2-2=-48 | | 228=1x+2x | | .9x+3.1=4.9 | | 2+7(-6v+6)=-82 | | -5x+1=x+1 | | 102-6x=7x+4 | | 1.8-0.63x=0.7(0.3x+10.9) | | -2(x+3)-4=-24 | | 74-3n=n-22 | | f(x)=-20 | | 2x(5x)(1)= | | 9(-3x^3)= | | 7(v-3)=7v-28 | | -vn+5+6v=1+5v+3 | | x^2+12x+32=-32 | | 2(v-3)=7v-28 | | 9y-17=24+2y | | 62-2x=10x+15 | | 17=(3x-5)+8 | | 11x+3=11x-1 | | -9(x-11)+632=25+13 | | 21x=61 |

Equations solver categories