11a^2+2a-17=0

Simple and best practice solution for 11a^2+2a-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 11a^2+2a-17=0 equation:


Simplifying
11a2 + 2a + -17 = 0

Reorder the terms:
-17 + 2a + 11a2 = 0

Solving
-17 + 2a + 11a2 = 0

Solving for variable 'a'.

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

Divide each side by '11'.
-1.545454545 + 0.1818181818a + a2 = 0

Move the constant term to the right:

Add '1.545454545' to each side of the equation.
-1.545454545 + 0.1818181818a + 1.545454545 + a2 = 0 + 1.545454545

Reorder the terms:
-1.545454545 + 1.545454545 + 0.1818181818a + a2 = 0 + 1.545454545

Combine like terms: -1.545454545 + 1.545454545 = 0.000000000
0.000000000 + 0.1818181818a + a2 = 0 + 1.545454545
0.1818181818a + a2 = 0 + 1.545454545

Combine like terms: 0 + 1.545454545 = 1.545454545
0.1818181818a + a2 = 1.545454545

The a term is 0.1818181818a.  Take half its coefficient (0.0909090909).
Square it (0.008264462808) and add it to both sides.

Add '0.008264462808' to each side of the equation.
0.1818181818a + 0.008264462808 + a2 = 1.545454545 + 0.008264462808

Reorder the terms:
0.008264462808 + 0.1818181818a + a2 = 1.545454545 + 0.008264462808

Combine like terms: 1.545454545 + 0.008264462808 = 1.553719007808
0.008264462808 + 0.1818181818a + a2 = 1.553719007808

Factor a perfect square on the left side:
(a + 0.0909090909)(a + 0.0909090909) = 1.553719007808

Calculate the square root of the right side: 1.246482654

Break this problem into two subproblems by setting 
(a + 0.0909090909) equal to 1.246482654 and -1.246482654.

Subproblem 1

a + 0.0909090909 = 1.246482654 Simplifying a + 0.0909090909 = 1.246482654 Reorder the terms: 0.0909090909 + a = 1.246482654 Solving 0.0909090909 + a = 1.246482654 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.0909090909' to each side of the equation. 0.0909090909 + -0.0909090909 + a = 1.246482654 + -0.0909090909 Combine like terms: 0.0909090909 + -0.0909090909 = 0.0000000000 0.0000000000 + a = 1.246482654 + -0.0909090909 a = 1.246482654 + -0.0909090909 Combine like terms: 1.246482654 + -0.0909090909 = 1.1555735631 a = 1.1555735631 Simplifying a = 1.1555735631

Subproblem 2

a + 0.0909090909 = -1.246482654 Simplifying a + 0.0909090909 = -1.246482654 Reorder the terms: 0.0909090909 + a = -1.246482654 Solving 0.0909090909 + a = -1.246482654 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.0909090909' to each side of the equation. 0.0909090909 + -0.0909090909 + a = -1.246482654 + -0.0909090909 Combine like terms: 0.0909090909 + -0.0909090909 = 0.0000000000 0.0000000000 + a = -1.246482654 + -0.0909090909 a = -1.246482654 + -0.0909090909 Combine like terms: -1.246482654 + -0.0909090909 = -1.3373917449 a = -1.3373917449 Simplifying a = -1.3373917449

Solution

The solution to the problem is based on the solutions from the subproblems. a = {1.1555735631, -1.3373917449}

See similar equations:

| 5a+6a=-6+8a | | 360=(x+40)+(4x+70)+(2x+110) | | x+47=54 | | 4x^2-2-8w=-6x | | -14x+1=21 | | 360=(x+50)+(2x+80)+(4x+20) | | x^4-5x^3-2x^2-3x-9= | | 5y-(3y+8)=3-(7y-9) | | 5(x-1)=3(2-x)-5 | | x+52=61 | | 11v-2v=54 | | x+78=86 | | 90x^2-63xy+18x=0 | | 7=m/125 | | -3.5b-1.75c= | | 4X+20=25-x | | x-2(-2x+20)=20 | | c/2=-14 | | X^2+27x-18=0 | | d=7.25t | | 1.1x=94000 | | -4(2t+5)=-60 | | 24x+7x=19 | | =11x+5y-30z | | 2^3x=1/8 | | -10(s+4)=-78 | | 2.5=0.6*[19.6(1-.61*x)]^(1/2)*2*x | | 324x^4-4y^4= | | 2/386/7 | | x/3-4#8 | | (x-2/3)^2-(y-1/4)^2=49 | | 48x^3-78.4x^2+16.8=0 |

Equations solver categories