a^2+17a-88=0

Simple and best practice solution for a^2+17a-88=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 a^2+17a-88=0 equation:


Simplifying
a2 + 17a + -88 = 0

Reorder the terms:
-88 + 17a + a2 = 0

Solving
-88 + 17a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '88' to each side of the equation.
-88 + 17a + 88 + a2 = 0 + 88

Reorder the terms:
-88 + 88 + 17a + a2 = 0 + 88

Combine like terms: -88 + 88 = 0
0 + 17a + a2 = 0 + 88
17a + a2 = 0 + 88

Combine like terms: 0 + 88 = 88
17a + a2 = 88

The a term is 17a.  Take half its coefficient (8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
17a + 72.25 + a2 = 88 + 72.25

Reorder the terms:
72.25 + 17a + a2 = 88 + 72.25

Combine like terms: 88 + 72.25 = 160.25
72.25 + 17a + a2 = 160.25

Factor a perfect square on the left side:
(a + 8.5)(a + 8.5) = 160.25

Calculate the square root of the right side: 12.658988901

Break this problem into two subproblems by setting 
(a + 8.5) equal to 12.658988901 and -12.658988901.

Subproblem 1

a + 8.5 = 12.658988901 Simplifying a + 8.5 = 12.658988901 Reorder the terms: 8.5 + a = 12.658988901 Solving 8.5 + a = 12.658988901 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + a = 12.658988901 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + a = 12.658988901 + -8.5 a = 12.658988901 + -8.5 Combine like terms: 12.658988901 + -8.5 = 4.158988901 a = 4.158988901 Simplifying a = 4.158988901

Subproblem 2

a + 8.5 = -12.658988901 Simplifying a + 8.5 = -12.658988901 Reorder the terms: 8.5 + a = -12.658988901 Solving 8.5 + a = -12.658988901 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + a = -12.658988901 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + a = -12.658988901 + -8.5 a = -12.658988901 + -8.5 Combine like terms: -12.658988901 + -8.5 = -21.158988901 a = -21.158988901 Simplifying a = -21.158988901

Solution

The solution to the problem is based on the solutions from the subproblems. a = {4.158988901, -21.158988901}

See similar equations:

| 4m-7=5-2m | | 0+-8=-8 | | 2(r-4)+8=3r-8 | | c-8=-8 | | -6+x=-23 | | 42x^2-33x+6=0 | | 9x-(7-x)=-67 | | 2n+7n=8n-8 | | 14x^2+45x=14 | | 12(3+y)=10y+40 | | -6+-10=-16 | | 8=6(m-5)-4(m-9) | | 4z^2+20=0 | | -12=-19+c | | 54x^2+6=39x | | 13=11+x | | 177-6x=21x+24 | | 12x^4-75x^2=0 | | 35n+12=40n+2 | | 15c+5c+5=5c+65 | | 9p+5=3p-1 | | x^2+2x+4=-7 | | 1=3f-14 | | 8(3h-3)+8=15h+29 | | 55x+36k=5(11x+6k) | | c+8=-8 | | x^2+60x=0 | | y=4(x+10) | | 22n-7=15 | | 7x-(3y)=21 | | y=-5-1 | | 21n-7=15 |

Equations solver categories