4x^2+9x-17=0

Simple and best practice solution for 4x^2+9x-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+9x-17=0 equation:


Simplifying
4x2 + 9x + -17 = 0

Reorder the terms:
-17 + 9x + 4x2 = 0

Solving
-17 + 9x + 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 + 2.25x + x2 = 0

Move the constant term to the right:

Add '4.25' to each side of the equation.
-4.25 + 2.25x + 4.25 + x2 = 0 + 4.25

Reorder the terms:
-4.25 + 4.25 + 2.25x + x2 = 0 + 4.25

Combine like terms: -4.25 + 4.25 = 0.00
0.00 + 2.25x + x2 = 0 + 4.25
2.25x + x2 = 0 + 4.25

Combine like terms: 0 + 4.25 = 4.25
2.25x + x2 = 4.25

The x term is 2.25x.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25x + 1.265625 + x2 = 4.25 + 1.265625

Reorder the terms:
1.265625 + 2.25x + x2 = 4.25 + 1.265625

Combine like terms: 4.25 + 1.265625 = 5.515625
1.265625 + 2.25x + x2 = 5.515625

Factor a perfect square on the left side:
(x + 1.125)(x + 1.125) = 5.515625

Calculate the square root of the right side: 2.348536779

Break this problem into two subproblems by setting 
(x + 1.125) equal to 2.348536779 and -2.348536779.

Subproblem 1

x + 1.125 = 2.348536779 Simplifying x + 1.125 = 2.348536779 Reorder the terms: 1.125 + x = 2.348536779 Solving 1.125 + x = 2.348536779 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = 2.348536779 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = 2.348536779 + -1.125 x = 2.348536779 + -1.125 Combine like terms: 2.348536779 + -1.125 = 1.223536779 x = 1.223536779 Simplifying x = 1.223536779

Subproblem 2

x + 1.125 = -2.348536779 Simplifying x + 1.125 = -2.348536779 Reorder the terms: 1.125 + x = -2.348536779 Solving 1.125 + x = -2.348536779 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = -2.348536779 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = -2.348536779 + -1.125 x = -2.348536779 + -1.125 Combine like terms: -2.348536779 + -1.125 = -3.473536779 x = -3.473536779 Simplifying x = -3.473536779

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.223536779, -3.473536779}

See similar equations:

| .5y+5.2=-2.8 | | 10x-13=78 | | 16a^2+9a^2=16 | | 2x+.66x=36 | | 3n-8=-32 | | (2a+3b-1)+(2c+d-b)-(3a-4c+5-6d)= | | 36x^2-84x+49=o | | x^2-9x-7=0 | | x^5-2x= | | (3x+1)(4x+2)=-10 | | (4ab+6bc+8cd)+(-6ab-3ab)+(4cd-6bc)= | | 5x+9y=3 | | 7.5(x-2)=-0.5x+25 | | (3x+1)(4X+2)=10 | | (4ab+6ab+8cd)+(-6ab-3ab)+(4cd-6bc)= | | 24=y-3 | | 10x^2-30=0 | | 1.3=4y+13.7 | | (2+5)+(-2)= | | y^2-12y+36=0 | | x(n+5)=3n+15 | | 3(n+5)=3n+15 | | (4+2)+(-5)= | | y^2-12y+25=0 | | (4z+2)+(z-5)= | | 3n+15=(n+5) | | -3m+10=m+2 | | 88x+23y-17z+68y-36y+39z= | | 252=2x^2+x+4x+2 | | 9a-2a+7a-3a= | | 4y^2+5y-6=0 | | 1/8(x-24)=7/8 |

Equations solver categories