4x^2-x-17=0

Simple and best practice solution for 4x^2-x-17=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-x-17=0 equation:


Simplifying
4x2 + -1x + -17 = 0

Reorder the terms:
-17 + -1x + 4x2 = 0

Solving
-17 + -1x + 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'.
-4.25 + -0.25x + x2 = 0

Move the constant term to the right:

Add '4.25' to each side of the equation.
-4.25 + -0.25x + 4.25 + x2 = 0 + 4.25

Reorder the terms:
-4.25 + 4.25 + -0.25x + x2 = 0 + 4.25

Combine like terms: -4.25 + 4.25 = 0.00
0.00 + -0.25x + x2 = 0 + 4.25
-0.25x + x2 = 0 + 4.25

Combine like terms: 0 + 4.25 = 4.25
-0.25x + x2 = 4.25

The x term is -0.25x.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25x + 0.015625 + x2 = 4.25 + 0.015625

Reorder the terms:
0.015625 + -0.25x + x2 = 4.25 + 0.015625

Combine like terms: 4.25 + 0.015625 = 4.265625
0.015625 + -0.25x + x2 = 4.265625

Factor a perfect square on the left side:
(x + -0.125)(x + -0.125) = 4.265625

Calculate the square root of the right side: 2.065338955

Break this problem into two subproblems by setting 
(x + -0.125) equal to 2.065338955 and -2.065338955.

Subproblem 1

x + -0.125 = 2.065338955 Simplifying x + -0.125 = 2.065338955 Reorder the terms: -0.125 + x = 2.065338955 Solving -0.125 + x = 2.065338955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = 2.065338955 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = 2.065338955 + 0.125 x = 2.065338955 + 0.125 Combine like terms: 2.065338955 + 0.125 = 2.190338955 x = 2.190338955 Simplifying x = 2.190338955

Subproblem 2

x + -0.125 = -2.065338955 Simplifying x + -0.125 = -2.065338955 Reorder the terms: -0.125 + x = -2.065338955 Solving -0.125 + x = -2.065338955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = -2.065338955 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = -2.065338955 + 0.125 x = -2.065338955 + 0.125 Combine like terms: -2.065338955 + 0.125 = -1.940338955 x = -1.940338955 Simplifying x = -1.940338955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.190338955, -1.940338955}

See similar equations:

| -5(2b+3)+(11b-2)=0 | | 6(1+4m)=-8(-2m+5)-4 | | 0=5+2x(3+4x) | | 3(n+2)-6n=-7(-n+2) | | 420=29f-7 | | 6t=69 | | 3s=-27 | | 2.4q-3.8-4.2q=-2.8q-2.8 | | 2.5r-11=6.5 | | 3(2t+6)=16 | | 5*2=2*-5 | | -(4n+8)=4(2n-8) | | 5x+30=6-x | | f(m)=17 | | a^4+b^6+a^3= | | x+-5=-3 | | 11-3m=-(-8+4m) | | 5x+27=5 | | -1=x-6 | | 4n+9n=26 | | -13.00+2.00x=11 | | 12+n=-4(1-2n)+n | | -9(4b+4)+(37b-8)=0 | | y+2(y+1)= | | 2(x-3)+8x=-76 | | 10u-7=8(2u-4)-9 | | 4y+8=-5y+3 | | 115x+130x=345 | | -1+-8= | | 5*-3-1y=2y | | (21)(41)+(21)(9)= | | 16x^2-2x-3=0 |

Equations solver categories